Posted by **Haley** on Tuesday, March 1, 2011 at 6:55pm.

a Frog is at the bottom of a 21 foot well. The frog jumps up 4 feet, and then falls back 2 feet. How many jumps will it take for the frong to jump out of the well?

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**alx**, Tuesday, March 1, 2011 at 6:58pm
11 junps

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**Ms. Sue**, Tuesday, March 1, 2011 at 7:00pm
The frog progresses 2 feet at each jump.

Be careful of the last jump. When the frog jumps up 4 feet, it will be at the top.

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**Haley**, Tuesday, March 1, 2011 at 7:10pm
10 Jumps Thanks for all your help.

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**alx**, Tuesday, March 1, 2011 at 7:14pm
Yea, sry my bad. She's totally correct. By the 9th jump the frog is at 18 feet, 3 feet away. the 10th jump will allow it to free from the well.

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