Escalator problem

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agnelengg's picture
Last seen: 11 years 32 weeks ago
Joined: 2006-06-14

How to solve the following question

An escalator (moving staircase) of n uniform steps visible at all times descends at constant speed. Two boys, A and B, walk down the escalator steadily as it moves, A negotiating twice as many escalator steps per minute as B. A reaches the bottom after taking 27 steps while B reaches the bottom after taking 18 steps. Find n.

abhisekomar's picture
Last seen: 9 years 44 weeks ago
Joined: 2008-08-28
n=54take lcm of 27 and 18

take lcm of 27 and 18

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