A can go round a circular path 8 times in 40 minutes. If the diameter of the cir

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A can go round a circular path 8 times in 40 minutes. If the diameter of the circle is increased to 10 times the original diameter, then the time required by A to go round the new path once, travelling at the same speed as before, is :

Options:

A . 20 min

B . 25 min

C . 50 min

D . 100 min

Answer: Option C

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