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How much does a watch gain per day, if its hand coincide every 64 min?
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- 37 min
- 328/11 min
- 31 min
- None of the above
Correct Option: B
If the minute hand of a clock overtakes the hour hand at interval N min of the correct time, then clock losses or gains by
The required result = [(720/11) - N) ] x [(60 x 24)/N) min
Positive for gain and negative for loss Here, N = 64
required time = [(720/11) - 64) ] x [(60 x 24)/64) min
= 328/11 min
