4 grade
posted by Anonymous .
A snail climbs up a wall 20 feet high. Each day the snail climbs 5 feet, but each night it slips backwards 4 feet. How many days will it take for the snail to get to the top of the wall?

54 = 1
The snail only goes up 1 foot a day.
20 * 1 = ? 
20

A snail climb up an electric pole at the rate of 90 cm a day and slips back 60 cm every night, how long will the snail take to reach the top of the a 360 cm high pole?
Ans9060=30
30รท360=12
Ansit will take 12 days
I'm i correct? 
20 days
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