Question

David swam 4 laps in 2 1/2 minutes. At this rate, how many laps would he swim in 25 minutes?

20 laps
40 laps
45 laps
50 laps

Answer 1

• B) 40 laps

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25 minutes is 10 times the 2 1/2 = 2.5 minutes.

Therefore David would swim 10 times greater distance in 25 minutes:

• 4 laps x 10 = 40 laps

The matching choice is B.