A wall of 100 meters can be built by 7 men or 10 women in 10 days. How many days

Question

A wall of 100 meters can be built by 7 men or 10 women in 10 days. How many days will 14 men and 20 women take to build a wall of 600 metres ?

Options:

A . 15

B . 20

C . 25

D . 30

Answer: Option A

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