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A wall clock gains 2 minutes in 12 hours, while a table clock loses 2 minutes every 36 hours. Both are set right at 12 noon on Tuesday. The correct time when both show the same time next would be
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- 12.30 at night, after 130 days
- 12 noon, after 135 days
- 1.30 at night, after 130 days
- 12 midnight, after 135 days
- 12.30 at night, after 130 days
Correct Option: B
From the question ,
The wall clock gains 6 minutes in 36 hours, while table clock loses 2 minutes in 36 hours.
∵ Difference of 8 minutes is there in | days. | |
2 |
∵ Difference of 12 hours is in = | × | × 12 × 60 = 135 days; | ||
2 | 8 |
Hence, both will show correct time at 12 noon after 135 days