# simplest way to approach the question

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Thread starter 8 months ago
#1
A frog is at the bottom of a well. It makes leaps of 30cm and slips back 20cm each time. If the well is 5m deep, after how many leaps will it jump out of the well
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8 months ago
#2
(Original post by Anonymous)
A frog is at the bottom of a well. It makes leaps of 30cm and slips back 20cm each time. If the well is 5m deep, after how many leaps will it jump out of the well
I think it’s 50 times idk

I got that by saying that the total progression the frog makes each leap is 10 cm and 10/500cm =50
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8 months ago
#3
Urmmmm 50? Or is this a trick question where you make me seem dumb because it’s a well and there’s no incline for the frog to climb?
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8 months ago
#4
48 or 49, depending on whether the 30 cm leaps are measured from the front of the frog or the back or somewhere inbetween.

Assuming the frog doesn't tire. and the slippage remains constant.

Because after 47 leaps the frog will have gained 4.7 metres. And on the 48th leap would get to 5 metres. or 5 metres and a bit due to the height of the frog and depending how the 30cm leap measuerment is defined.
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