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Jimmy takes the underground train to work and uses an escalator at the railway station. If Jimmy runs up 7 steps of the escalator, then it takes him 28.5 seconds to reach the top of the escalator. If he runs up 13 steps of the escalator, then it takes him only 19.5 seconds to reach the top.
How many seconds would it take Jimmy to reach the top if he did not run up any steps of the escalator at all?
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October 6th, 2009 - 22:21
its 30 seconds!!!
September 30th, 2009 - 01:21
x- time to reach by escalator
y- time to take 1 step
x-7y=28.5
x-13y=19.5
on solving,
x=49sec. Ans
September 27th, 2009 - 17:26
30 seconds
September 25th, 2009 - 20:39
jimmy takes 39 sec to reachn the top without running any step
September 25th, 2009 - 00:56
I solve the answer it comes out to be 55.5 seconds
September 24th, 2009 - 16:12
39
September 24th, 2009 - 13:07
39 sec.
not sure …………..just tried a shortcut
September 23rd, 2009 - 16:51
I tried this puzzle bt nt able to get the ri8 answer…
Can any1 gimme the solution of the puzzle..??
September 23rd, 2009 - 17:01
@ Abhimanyu
We appreciate your effort. Let the other people also try.After that I am here to help you out.Have a great day!