reena climbs up 5 stairs every second and then climbs down 2 stairs over the next second. how many second will she take to climb 60 stairs please answer my questions
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Answer:
she will climb 60 stairs on 39 seconds.
Step-by-step explanation:
The net climb for Reena is 3 stairs per 2 seconds. So she should take (60/3) *2=40 seconds
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