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Two pendulums differ in lengths by 22m. ...

Two pendulums differ in lengths by `22m`. They oscillate at the same place so that one of then makes 30 oscillations and the other makes 36 oscillations during the same time. The length `(` in `cm)` of the pendulum are `:`

A

72 and 50

B

60 and 38

C

50 and 28

D

80 and 58

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The correct Answer is:
A
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