Question

10 boys can dig a pitch in 12 hours how long will it 8 boys take to do it

Answer 1

Number of boys = 10

Time taken by 10 boys to dig a pitch = 12 hours

Let the time taken by 8 boys to dig a pitch be x hours.

It is a case of inverse variation

10 × 12 = 8x

=> 120 = 8x

=> x = 120/8

=> x = 15

Hence, the time taken by 8 boys to dig a pitch is 15 hours.


Thanks

Answer 2

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