A snail is down in a 20 ft well

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Beanos

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A snail is in a 20ft well, he decides to go up the well, going 3 inches per hour, for 12 daylight hours, during the nighttime, he slips down 2 inches per hour for 12 nighttime hours, how long does it take him to escape?
 
Hi Beanos. If you're unable to make a start, then try answering these three questions first. Please post your answers.

1) 20 feet is how many inches?

2) If an object moves 3 inches/hour for 12 hours, how far does it go?

3) If an object moves 2 inches/hour for 12 hours, how far does it go?

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Algebra may help, but this problem also requires a bit of common sense!
 
Beanos said:
A snail is in a 20ft well, he decides to go up the well, going 3 inches per hour, for 12 daylight hours, during the nighttime, he slips down 2 inches per hour for 12 nighttime hours, how long does it take him to escape?
Click to expand...
Remember that after the snail climbs the last 36 in (17' to 20') - it is out of the well. It does not slide back down.
 
JayJay said:
Algebra may help, but this problem also requires a bit of common sense!
Click to expand...
Agree! Drawing a diagram, followed by careful thinking about what happens every 12 hours might just lead to a brainstorm.

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