A cockroach fall on 30 feets long hole at day he climb 3 feet and at night how many whole days will take him to climb up
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A cockroach climbs a well 3 feet during the day, and during night, it slips 2 feet. If the well is 30 feet deep, how long will it take for the snail to climb?
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Shrey Sharma
Answered February 13, 2019
A snail is at the bottom of a 30-foot well. Each day he climbs up three feet, but at night he slips back two feet. How many days will it take him to climb out of the well?
AT the finish of a day he atlast climbs one feet only..(3 feet climbs a day - 2 feet slipped by night = 1 feet climb a day)
till 25 days he climbs 25 feet ..
On 26th morning he climbs 25 + 3 = 28 feet
At night he slipped by 2 feet so it gets 26 feet at the end of 26th day
On 27th day he climbs 3 feet so it gets 26 + 3 - 29 th feet
at the end of day in night he slipped by 2 so it gets 29 - 2 = 27 feet
On 28 th day he climbs 3 more feet that is 27 + 3 =30 feet complete on 28 th day
So overall it takes 28 days..