unitary methods
in 3 days and 23 hours a watch gains 5 sec. find how much time the watch will take to gain 18
1) 14 day and 6 hours
2) 0 days and 6 hours
3) 4 days and 22 hours
4) 3 days and 12 hours
give the explanation
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Answer:
2 days 20 hours = 2 × 24 + 20 = 48 + 20 =
68 hours
Now 20 sec. are gained in = 68 hours
:: 1 sec. will be gained in = 68/20 hours
35 sec. will be gained
in = 68/20 * 35
= 119 hours = 119 ÷ 24 days
= 4 days 23 hours
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