Question

a pirce of road is constructed by 84 worker in 36 days .how much more worker would be required to finished the same work in 21 days​

Answer 1

Answer:

60

Step-by-step explanation:

number of workers and number of days required to finish the work are inversely proportional

now let X be the required number of workers

so 84 workers did the work in 1/36 days

X workers did the work in 1/26 days

84/26=X/36

X=(84*36)/21

X=(84*12)/7

X=12*12

X=144

so total 144 members are required

but already 84 members are working

so 144-84=60

60 more workers are required to finish the work in 21days