5.3 Practice A

Name____________________________________________________________Date___________

Find the distance.

1. ? , 10 ft sec, 6 sec= = =d r t 2. ? , 25 mi h, 3 h= = =d r t

3. ? , 14 m day, 12 days= = =d r t 4. ? , 72 ft min, 14 min= = =d r t

5. ? , 102 km h, 5 h= = =d r t 6. ? , 26 in. sec, 44 sec= = =d r t

Find the speed.

7. 396 miles in 6 hours 8. 902 kilometers in 11 hours

9. 984 inches in 24 seconds 10. 4844 feet in 4 minutes

11. 1225 feet in 49 minutes 12. 320 yards in 16 seconds

Find how far the object travels in the given amount of time.

13. 15 days 14. 64 seconds

15. 40 seconds 16. 8 hours

17. Your friend has an electric wheelchair that can travel at a speed of 352 feet per minute. How far can your friend travel in 15 minutes?

18. Some people want to bring high speed “bullet trains” to Florida. A bullet train could take you 340 miles from Jacksonville to Miami in about 2.5 hours. At what speed would it travel?

19. At a grocery store, you buy four cans of soup for $5. How much would you pay for six cans of soup?

20. At a fruit stand, you pay $3.87 for three oranges. How much would you pay for five oranges?

21. It took you 20 minutes to jog 2 miles to your friend’s house at a steady rate. How far could you jog in 30 minutes? Explain your method.

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195

Moves 132 feet every 15 seconds

Moves 240 miles every 3 hours

Moves 129 miles every 3 days

Moves 9 millimeters every 8 seconds

5.3 Practice B

Name____________________________________________________________Date___________

Find the distance or speed.

1. ? , 24 ft sec, 6 sec= = =d r t 2. ? 275 mi, , 5 h= = =d r t

3. ? 189 m, , 27 h= = =d r t 4. ? , 214 km h, 6 h= = =d r t

5. A bus leaves St. Augustine at 12:30 P.M. How fast should the bus drive to arrive at Ft. Lauderdale at 5:00 P.M.?

6. The total weight of 4 baseballs is about 20 ounces. How many baseballs weigh 10 pounds?

7. Each team in a 12-mile bicycle relay race can have 3 riders. Each rider is allowed to complete any part of the 12 miles. The table shows the greatest distance each rider on your team can cover, and the amount of time it takes.

What is the least amount of time your team will take to finish the race?

8. You and a friend are 2 miles apart. You start walking toward each other at the same moment. You travel 22 feet every 5 seconds. Your friend travels 32 feet every 8 seconds.

a. How close are you to each other after 10 minutes?

b. Will you and your friend meet in 20 minutes? Explain your reasoning.

9. The basic calling rate for your pre-paid cell phone is $0.20 per minute. A second option is to pay $6.99 per month to have a rate of $0.10 per minute. A third option is to buy a chunk of minutes (good for only one month):

Suppose that the least, the greatest, and the typical number of minutes that you use your cell phone in a month are 60 minutes, 275 minutes, and 100 minutes, respectively.

a. Find the best option and least cost for each number of minutes.

b. Choose an option to use each month. Explain your reasoning.

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Distance (miles) Time (minutes)

You 4 18

Your friend 6 36

Your cousin 5 24

$20 for 200 minutes $30 for 400 minutes $50 for 1000 minutes