Unit 3 Review

1. Lin’s family has completed 80% of the trip. They have traveled 40 miles. How long is the whole trip? Show your work!

• 2 miles

• 20 miles

• 50 miles

• 65 miles

It took 5 hours to drive 250 miles. At this rate, how long does it take to drive 110 miles? Show your work!

• 2 hours

• 2.2 hours

• 0.2 hours

• 1.5 hours

There are 10 bookbags left on the bus, 8 of them are blue. What percentage of book bags are blue? Show your work!

• 0.8%

• 1.25 %

• 125%

• 80%

It takes Jasmine 6 minutes to swim 5 laps.

1. How many laps per minute is that?

2. How many minutes per lap is that?

3. If Jasmine swims 22 laps at the same rate, how long does it take her?

6. Which weighs more: a book that weighs 4.2 kilograms, or a computer that weighs 6 pounds? Explain your reasoning. Note: 1 pound is about 0.45 kilograms.

Zoe and Mason are 18 miles apart on a bike path when they start biking toward each other. Zoe rides at a constant speed of 3 miles per hour, and Mason rides at a constant speed of 5 miles per hour. How long does it take until Zoe and Mason meet?