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Unit conversion with ratios

Math • Ratios, Rates & Percent • Transitional Reasoning • 19 questions

Unit conversion with ratios Transitional Reasoning Download PDF

Math · Ratios, Proportions & Percent · Math · Ratios, Rates & Percent

19 Math practice questions on Unit conversion with ratios. Questions that build towards applied reasoning.

Questions

  1. 1.

    An electroplating workshop operates a nickel-coating bath with an optimal electric current density of 36 amperes per square decimeter. A process technician needs to convert this value into milliamperes per square centimeter to calibrate micro-electrode sensors. Given that 1 ampere equals 1,000 milliamperes and 1 square decimeter equals 100 square centimeters, what is the electric current density in milliamperes per square centimeter?

    • A) 3.6 milliamperes per square centimeter
    • B) 36 milliamperes per square centimeter
    • C) 360 milliamperes per square centimeter
    • D) 3,600 milliamperes per square centimeter
  2. 2.

    A hydraulic press in an aerospace manufacturing facility applies a clamping pressure of 450 kilopascals to bond carbon-fiber panels. A materials engineer needs to convert this pressure into newtons per square centimeter to evaluate localized stress on embedded sensor elements. Given that 1 kilopascal equals 1,000 newtons per square meter and 1 square meter equals 10,000 square centimeters, what is the clamping pressure in newtons per square centimeter?

    • A) 4,500 newtons per square centimeter
    • B) 450 newtons per square centimeter
    • C) 4.5 newtons per square centimeter
    • D) 45 newtons per square centimeter
  3. 3.

    During an endurance assessment on a specialized treadmill, an athlete runs at a steady pace of 22 feet per second. A sports physiologist needs to convert this running pace into miles per hour to compare the performance data against outdoor road metrics. Given that 1 mile equals 5,280 feet and 1 hour equals 3,600 seconds, what is the athlete's speed in miles per hour?

    • A) 10 miles per hour
    • B) 12 miles per hour
    • C) 18 miles per hour
    • D) 15 miles per hour
  4. 4.

    A commercial bakery operates an industrial dispenser that releases organic flour at a steady rate of 72 ounces per minute. A production coordinator needs to convert this flow rate into pounds per hour to schedule bulk mixing batches. Given that 1 pound equals 16 ounces and 1 hour equals 60 minutes, what is the dispensing rate in pounds per hour?

    • A) 4.5 pounds per hour
    • B) 19.2 pounds per hour
    • C) 180 pounds per hour
    • D) 270 pounds per hour
  5. 5.

    A high-performance computing cluster produces thermal exhaust at a steady rate of 108 megajoules per hour. A facilities engineer needs to convert this heat dissipation rate into kilojoules per second to determine the required liquid-cooling unit capacity. Given that 1 megajoule equals 1,000 kilojoules and 1 hour equals 3,600 seconds, what is the heat dissipation rate in kilojoules per second?

    • A) 18 kilojoules per second
    • B) 24 kilojoules per second
    • C) 30 kilojoules per second
    • D) 36 kilojoules per second
  6. 6.

    A municipal water treatment facility injects a liquid coagulant into its settling tanks at a continuous rate of 25 liters per minute. A process engineer needs to convert this dosage rate into cubic meters per day to schedule bulk chemical deliveries. Given that 1 cubic meter equals 1,000 liters, 1 hour equals 60 minutes, and 1 day equals 24 hours, what is the coagulant dosage rate in cubic meters per day?

    • A) 36 cubic meters per day
    • B) 1.5 cubic meters per day
    • C) 360 cubic meters per day
    • D) 0.6 cubic meters per day
  7. 7.

    A commercial beverage bottling plant operates an automated filling line that injects concentrated fruit extract at a steady rate of 45 centiliters per second. A quality control engineer needs to express this flow rate in liters per minute to monitor daily ingredient consumption. Given that 1 liter equals 100 centiliters and 1 minute equals 60 seconds, what is the flow rate in liters per minute?

    • A) 0.45 liters per minute
    • B) 27 liters per minute
    • C) 75 liters per minute
    • D) 2,700 liters per minute
  8. 8.

    In an emergency department, an automated infusion pump delivers a saline solution at a steady rate of 120 milliliters per hour. A clinical nurse must transition the patient to a manual gravity infusion set that delivers 20 drops per milliliter. Given that 1 milliliter equals 20 drops and 1 hour equals 60 minutes, what is the required infusion rate in drops per minute?

    • A) 2 drops per minute
    • B) 6 drops per minute
    • C) 24 drops per minute
    • D) 40 drops per minute
  9. 9.

    A port grain terminal unloads bulk wheat from cargo ships at a steady rate of 126 metric tons per hour. A logistics coordinator needs to convert this throughput into kilograms per second to configure the automated conveyor intake scale. Given that 1 metric ton equals 1,000 kilograms and 1 hour equals 3,600 seconds, what is the unloading rate in kilograms per second?

    • A) 2,100 kilograms per second
    • B) 453.6 kilograms per second
    • C) 3.5 kilograms per second
    • D) 35 kilograms per second
  10. 10.

    A textile laboratory manufactures high-performance synthetic yarn with a measured linear density of 54 milligrams per centimeter. A quality assurance engineer needs to convert this measurement into grams per meter to verify compliance with international fabrication standards. Given that 1 gram equals 1,000 milligrams and 1 meter equals 100 centimeters, what is the linear density of the yarn in grams per meter?

    • A) 5.4 grams per meter
    • B) 540 grams per meter
    • C) 0.54 grams per meter
    • D) 5,400 grams per meter
  11. 11.

    An autonomous electric delivery cart travels along campus paths at a steady speed of 180 meters per minute. A logistics manager needs to convert this speed into kilometers per hour to verify compliance with campus pathway regulations. Given that 1 kilometer equals 1,000 meters and 1 hour equals 60 minutes, what is the speed of the delivery cart in kilometers per hour?

    • A) 3,000 km/h
    • B) 0.18 km/h
    • C) 3.0 km/h
    • D) 10.8 km/h
  12. 12.

    A commercial printing facility operates a digital press that prints test booklets at a steady rate of 450 sheets per minute. A warehouse supervisor needs to convert this consumption rate into reams per hour to schedule bulk paper restocking. Given that 1 ream equals 500 sheets and 1 hour equals 60 minutes, what is the press's paper consumption rate in reams per hour?

    • A) 27 reams per hour
    • B) 54 reams per hour
    • C) 3,750 reams per hour
    • D) 0.9 reams per hour
  13. 13.

    A remote environmental telemetry station transmits sensor logs to an orbital satellite at a steady rate of 4.8 megabytes per minute. A telecommunications technician needs to express this throughput in kilobits per second to verify compatibility with a receiving terminal. Given that 1 megabyte equals 8 megabits, 1 megabit equals 1,000 kilobits, and 1 minute equals 60 seconds, what is the transmission rate in kilobits per second?

    • A) 640 kilobits per second
    • B) 80 kilobits per second
    • C) 480 kilobits per second
    • D) 5,120 kilobits per second
  14. 14.

    A robotic arm in an electronics manufacturing plant rotates a circuit board turntable at a steady rate of 45 revolutions per minute. To synchronize the motion with an optical inspection sensor that records angular movement in seconds, a software engineer must convert this rate into degrees per second. Given that 1 revolution equals 360 degrees and 1 minute equals 60 seconds, what is the rotational speed in degrees per second?

    • A) 7.5 degrees per second
    • B) 135 degrees per second
    • C) 270 degrees per second
    • D) 450 degrees per second
  15. 15.

    A commercial cargo ship operates an auxiliary generator that consumes fuel at a certified rate of 216 kilograms per day. A marine technician needs to convert this fuel consumption rate into grams per minute to calibrate the engine's automated monitoring system. Given that 1 kilogram equals 1,000 grams, 1 day equals 24 hours, and 1 hour equals 60 minutes, what is the fuel consumption rate in grams per minute?

    • A) 0.15 grams per minute
    • B) 311.04 grams per minute
    • C) 9,000 grams per minute
    • D) 150 grams per minute
  16. 16.

    An automated coating machine applies a waterproof barrier to concrete panels at a certified rate of 250 grams per square meter. A facilities supervisor needs to express this coverage rate in metric tons per hectare to schedule bulk chemical deliveries for an outdoor logistics depot. Given that 1 metric ton equals 1,000,000 grams and 1 hectare equals 10,000 square meters, what is the application rate in metric tons per hectare?

    • A) 2.5 metric tons per hectare
    • B) 0.25 metric tons per hectare
    • C) 25 metric tons per hectare
    • D) 0.025 metric tons per hectare
  17. 17.

    A renewable energy facility tests a prototype solar thermal collector that absorbs energy at an average rate of 720 kilojoules per square meter. An engineer needs to convert this measurement into joules per square centimeter to compare it with miniature sensor benchmarks. Given that 1 kilojoule equals 1,000 joules and 1 square meter equals 10,000 square centimeters, what is the energy density in joules per square centimeter?

    • A) 0.72 joules per square centimeter
    • B) 7.2 joules per square centimeter
    • C) 7,200 joules per square centimeter
    • D) 72 joules per square centimeter
  18. 18.

    A remote-controlled inspection robot moves through a drainage pipe at a constant speed of 15 centimeters per second. A civil engineer needs to convert this speed into meters per minute to integrate it into the municipal maintenance schedule. Given that 1 meter equals 100 centimeters and 1 minute equals 60 seconds, what is the speed of the robot in meters per minute?

    • A) 0.15 m/min
    • B) 5.4 m/min
    • C) 25 m/min
    • D) 9 m/min
  19. 19.

    A laboratory drone releases an agricultural nutrient spray at a steady rate of 54 liters per hour during crop monitoring flights. To program micro-spray bursts over test plots, an agronomist must convert this flow rate into milliliters per second using standard unit conversion ratios. Given that 1 liter equals 1000 milliliters and 1 hour equals 3600 seconds, what is the flow rate of the spray in milliliters per second?

    • A) 9 mL/s
    • B) 12 mL/s
    • C) 15 mL/s
    • D) 900 mL/s