Imagine that your watch was correct at noon, but then it began to lose $30$ minutes each hour. It now shows $4$ pm but it stopped $5$ hours ago. What is the correct time now?

9 : 30

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11 : 00

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1 : 30

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1 : 00

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Solution

The correct option is D $1 : 00$ am
The watch loses $\frac{1}{2}$ hour each hour. So, in an hour, the net increase in time is $\frac{1}{2}$ hour only.
It must have to take $8$ hours to show $4$ pm from $12$ noon.
Thus, it stopped at $8$ pm.
So, the correct time is $5$ hours ahead of $8$ pm, i,e., $1 : 00$ am.

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Imagine that your watch was correct at noon, but then it began to lose 30 minutes each hour. It now shows 4 pm but it stopped 5 hours ago. What is the correct time now?

The correct option is D 1:00 amThe watch loses 12 hour each hour. So, in an hour, the net increase in time is 12 hour only. It must have to take 8 hours to show 4 pm from 12 noon. Thus, it stopped at 8 pm. So, the correct time is 5 hours ahead of 8 pm, i,e., 1:00 am.

Imagine that your watch was correct at noon, but then it began to lose $30$ minutes each hour. It now shows $4$ pm but it stopped $5$ hours ago. What is the correct time now?