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A clock becomes fast by 15 second in every 2 hours. If it is set correct at 5 P.M. on Sunday, what will be the time on clock on Monday at 9 A.M. ?

Solution

✅ Correct Option: 1

From 5 P.M. Sunday to 9 A.M. Monday is 16 hours. That contains 16÷2=816 \div 2 = 8 blocks of two hours. Total gain =8×15=120= 8 \times 15 = 120 seconds =2= 2 minutes. Since the clock runs fast, it shows 9:02 A.M.

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