Question

If 20 assemblers can complete a certain job in 6 ​hours, how long will the same job take if the number of assemblers is cut back to 12​?

Answer 1

Given,

Total number of assemblers = 20

They work a job in 6 hours.

To find,

Time to complete the work if the number of assemblers is cut back to 12​.

Solution,

Initially,

20 assemblers = 6 hours

1 hour = $\dfrac{20}{6}$ assemblers

If assemblers are 12 then,

$t=\dfrac{20}{6}\times 12\\\\=40$

Hence, 40 hours will be required if the number of assemblers is cut back to 12​.