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Ten men take 4 days to complete the task of tarring a road. How many days would 8 men take?

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Ten men take 4 days to complete the task of tarring a road. How many days would 8 men take?

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Let us suppose that 8 men require x days to tar the road.

Number of days required by 10 men to tar the road 

= 4 

The number of men and the number of days required to tar the road are in inverse proportion.

∴ 8 men will require 5 days to tar the road.

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