Practice and Problem-Solving Exercises

A Practice

See Problem 1.

9. Running Trisha ran 10 km in 2.5 h. Jason ran 7.5 km in 2 h. Olga ran 9.5 km in 2.25 h. Who had the fastest average speed?
10. Population Bellingham, Washington, had an area of 25.4 mi 2 25.4 , mi squared  and a population of 74,547 during one year. Bakersfield, California, had an area of 113.1 mi 2 113.1 . mi squared  and a population of 295,536 during the same year. Which city had a greater number of people per square mile?

See Problems 2 and 3.

Convert the given amount to the given unit.

11. 63 yd; feet
12. 168 h; days
13. 2.5 lb; ounces
14. 200 cm; meters
15. 4 min; seconds
16. 1500 mL; liters
17. 9 yd; meters
18. 5 kg; pounds
19. 79 dollars; cents
20. 3 qt; liters
21. 89 cm; inches
22. 2 ft; centimeters

    See Problem 4.

23. Maintenance The janitor at a school discovered a slow leak in a pipe. The janitor found that it was leaking at a rate of 4 floz per minute. How fast was the pipe leaking in gallons per hour?
24. Shopping Mr. Swanson bought a package of 10 disposable razors for $6.30. He found that each razor lasted for 1 week. What was the cost per day?

B Apply

Copy and complete each statement.

25. 7 ft 3 in. = □ in.
26. 2.2 kg = □ lb
27. 2.5 h = □ min
28. 2 qt/min = □ gal/s
29. 75 cents/h = □ dollars/day
30. 60 ft/s = □ km/h

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