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(#M40019384) ELITMUS question Boxes count Keep an EYE

A man starts painting a road from middle with n numbers of boxes. He can paint 1 km by 1 box. He can carry only 1 box at a time either filled or empty. He has to deposite all the boxes at middle. At the end of one side, the distance covered by man is 130 kms also there is a mark after every 100 meters on the road. find the number of n.

Asked In Elitmus NITIN GUPTA (10 years ago)

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NITIN GUPTA  (10 years ago)

The answer is option b-51.
EXPLANATION:
1km=1000m. so,130km=130000metres.
Consider a centre point as 26.Now LHS and RHS are symmetrical. Considering only RHS,
each milestone consumes metres in the order of 100,200,300,400,............,2500 to reach forward. and to reach the centre milestone again it took the same order 100,200,300,400,......2500.
so, on adding all those as follows:
100+20+300+400+500+600+.....+2500+100+200+300+400+....+2500=65000metres.
This is for RHS. And for LHS=65000 metres. On addition,
65000+65000=130000metres.
so, the answer is 51...

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suryakant kumar  (10 years ago)

for solution see #M40019203...

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