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Clock

Expert replies
Source: — Problem Solving |

by mj78ind » Sun Jun 06, 2010 9:14 am
@Raj

Please repost can not see the question
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by rahulmehra13 » Sun Jun 06, 2010 9:38 am
dkumar.83 wrote:Hi,

Kindly specify the detailed way to find this answer.

Image

IMO C

1st clock loses 3 min/hr i.e. 72 min/day or 1.2 hr/day

2nd clock gains 5 min/hr i.e. 120 min/day or 2 hr/day

For losing 12 hrs 1st clock takes 10 days (12/1.2)
similarly for gaining 12 hrs 2nd clock takes 6 days (12/2)

Calculate LCM of 6 & 10, you will get 30
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