A clock strikes 4 taking 9 seconds. In order to strike 12 at the same rate, the time taken is?
There are 3 intervals when the clock strikes 4
Time taken for 3 intervals = 9 seconds
Time taken for 1 interval =$\dfrac{9}{3}$=3 seconds
In order to strike 12, there are 11 intervals.
Hence time needed =3 $\times$ 11 = 33 seconds
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Answer |