Assignment # ______Solving Proportions (P1) Name ______
Standard: AF 4.2 Solve multi-step problems Pre-Algebra, Period ______
involving rate, time, distance,
average speed Date ______
· Solving a Proportion
·
· 1) Read the word problem
· 2) Set up the proportion (units should be consistent – same unit on top, same unit on bottom)
· 3) Solve the proportion (SHOW YOUR WORK!!!)
· 4) Check your answer by asking yourself, “Does it make sense?”
1. John drives at a speed of 60 miles per hour for 7 hours. How far did he go?
3. A certain map uses a scale of 1 inch equals 25 miles. How many miles are represented by 5 inches on this map?
5. It takes a machine 12 minutes to fill 200 bottles of soda. At this rate, how many minutes will it take the machine to fill 500 bottles of soda?
2. If 1 inch is approximately 2.5cm, approximately how many cm is 7 inches?
4. Safeway advertises 12 small bags of Hot
Cheetos for $3. How much does it cost to buy 32 bags?
6. A car gets 24 miles per gallon of gasoline (mi/gal). How many gallons of gasoline would the car need to travel 144 miles?
7. Willy read a 200-page book in 10 hours. At that rate, how long will it take him to read a 320-page book?
9. The atmosphere normally exerts a pressure of about 12 pounds per square inch on surfaces at sea level. About how much pressure does the atmosphere exert on a surface 20 square inches in area?
11. About how many kilometers is 5 miles?
(1 mile ≈ 1.6 km)
8. A parking meter takes a dollar for every ten minutes. How much does it cost to park for 2 hours? Be careful!!!
10. A duck flew at 16 miles per hour for 4
hours, then at 12 miles per hour for 3 hours. How far did the duck fly in all?
12. Stephanie is reading a 456- page book. During the past 7 days she has read 168 pages. If she continues reading at the same rate, how many more days will it take her to complete the book?
A 12 B 14
C 19 D 24