One pendulum ticks 57 times in 5 8 sec, while another ticks 608 times – McqOptions

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1.	One pendulum ticks 57 times in 5 8 sec, while another ticks 608 times in 609 sec. If they started together, then how often will they tick together in the first hour?
A.	47
B.	53
C.	57
D.	67
Answer» D. 67

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