Question

50 labourers can dig a pond in 16 days. How many labourers will be required to dig another pond, double in size in 20 days?

Answer 1

In 16 days for diging pond labour reqd.

In 1 day, labour reqd. = 50 × 16

In 20 days, labour reqd. = `(50xx16)/20`

In 20 days, with double work, labour reqd.

`=(50xx16xx2)/20`

= 5 × 8 × 2

= 80

Hence labourers required = 80