Asked by Anonymous

Cecily is swinging. The swing goes back and forth twice every five seconds. How many seconds does it take her to go back and forth one hundred times?

12 years ago

Answered by PsyDAG

Twice every 5 seconds = once every 2.5 seconds.

100 * 2.5 = ?

12 years ago

Answered by Anonymous

250 seconds

12 years ago

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