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Bezzdna [24]
3 years ago
6

HELP PLS I NEED TO TURN IT IN MONDAY!

Mathematics
1 answer:
AnnyKZ [126]3 years ago
6 0

Terri can swim 3 laps in 2.5 minutes. To find how long it takes to swim 20 laps, you can make a proportion.

\frac{Lap}{Time}

Put the amount of laps on the top and the time(minutes) at the bottom.

\frac{3}{2.5} = \frac{20}{x}

Cross multiply:

20 \times 2.5 = 50

Divide by 3:

50 \div 3 = 16 \frac{2}{3} \rightarrow 16.67

It would take Terri 16 \frac{2}{3} OR 16.67 minutes to run 20 laps.

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