Question
A clock gets fast by 15 minutes every day. If, on a
certain day, the clock shows correct time at 12 in the noon, what time will the clock show at 4:00 am the next day?Solution
The time that clock gets fast in 24 hours = 15 min Time elapsed between 12 noon and 4:00 am next day = 16 hours. ∴ The time the clock will get fast = 15/24 * 16 = 10min Hence the lock will show 4:10 am.
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