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If the hands of a clock coincide in every 65 minutes (true time), in 24 hours the clock will gain:
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10 10 minutes. 143
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9 12 minutes. 143
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11 12 minutes. 143
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12 10 minutes. 143
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Correct Option: A
As per the given above question , we can say that
The minutes hand gains 60 minutes in | 60 | x 60 | = | 720 | = 65 | 5 | minutes. |
55 | 11 | 11 |
∴ The hands of a correct clock coincide in every 65 | 5 | minutes. |
11 |
The clock in question gains | 5 | minutes in 65 minutes. |
11 |
∴ In 24 hours = 24 × 60 minutes the clock gains
Required answer = | 5 | x | 1 | x | 24 x 60 = | 1440 | = | minutes = 10 | 10 | minutes |
11 | 65 | 143 | 143 |
Therefore , required answer will be option A .