Answer / guest

19 hours

A frog climbs 1 foot per 1 1/2 hours as during 30 minutes
rest he slips back 2 feet. This way he will climb 12 feet in
18 hours. In next hour he will climb 3 more feet i.e. he
will complete 15 feet in 19 hours and will reach the top of
the wall.

Answer / sachin

A frog climbe 1 feet in 90 min = 1.5 hrs.

for 1 feet 1.5 hrs
for 12 feet x hrs

then,
x = (12*1.5)/1
= 18 hr.
for 12 feet, 18 will require.

now 15 - 12 = 3 feet are needed to reach at top.
now, frog will climbe 3 feet in 1 hr and will reach at top.

Total hrs required are 19.

Answer / siva krishna

Hi to all,
thi is siva,

the frog will take 19 hours to climbing the 15 feet wall,

because the frog will take 1.5 hours to climb 1 feet. so it
will take 18 hours to climb 12 feets,then, in the next hour
it will be on the top.

Answer / munna

19 hrs is the right answer.....

Answer / karthik.r

after 18 hours it reach 12 feet and after some jump(take
1hour) to reach its destination(remaining 3 feet). totaly
19 hours to takes.
for 1feet= (spend) 1and1/2 hours(1hour 1feet+1/2 hour
rest)

for 15 feet=(spend)18 hours+(1 hour remaining 3 feet
without slips )

Answer / karunakar

19hours

Answer / sid

hi sachin,

perfect explanation ............19 Hrs

Answer / guest

he will take 22 hours&30 minutes to reach the top of the wall.
bcz he takes 1 1/2 hr to climb 1 step.

Answer / dhanapal

My answer is 25 hrs and 50 mins.

He can claim 3 ft in an hour and rest for 30 mins. that means he takes 1 hrs and 30 mins to claim 1ft (i.e. 1.5hr). So he wil take 25hrs and 30 mins (i.e. 25.5) till 17 ft.

Now we have hint that he can claim 3 ft in an hour. so no need to take rest after 1 ft. (3/1 = 20 mins). so if Add 20 mins with 25 hr and 30 hrs will get 25 hrs and 50mins.

regards
Dhanapal

Answer / xxx

I think you are wrong Sabarish.... Guest is right

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