If the time by the clock is quarter to 10, after how much time will the clock show half past 10?
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Solution
Quarter to 10, means 15 minutes before 10 O' clock.
We know that 1 hour = 60 minutes
So, half hour = 30 minutes
Therefore, half past 10 = 10:30
So, the time after which the clock will show 10:30
= 15 + 30 = 45 minutes