A ladder has 10 steps.A labourer has to carry some weight to the top. He climbs the ladder 2 steps up in one second and 1 step down in the next second by dancing on a famous tune. In how many seconds he would reach the top.
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Answered by
8
this is famous parabolex puzzle
ie he goes 1 step in 2 seconds till 8th step
ie 16 sec
now he reaches top in 17th sec
ie he goes 1 step in 2 seconds till 8th step
ie 16 sec
now he reaches top in 17th sec
Answered by
10
one second-(+2)...........(i)
one second-(-1).............(ii)
adding (i) and (ii),
two seconds-(+1)
he travels 1 step up in 2 seconds.
therefore he travels 8 steps in (8/1)*2=16seconds.
8th step+2 steps
16+1
=17 seconds
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I hope this helps.
please mark as brainliest.
one second-(-1).............(ii)
adding (i) and (ii),
two seconds-(+1)
he travels 1 step up in 2 seconds.
therefore he travels 8 steps in (8/1)*2=16seconds.
8th step+2 steps
16+1
=17 seconds
======================
I hope this helps.
please mark as brainliest.
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