Question

It was calculated that 75 men could complete a piece of work in 20 days. When work was scheduled to commence, it was found necessary to send 25 men to another project. How much longer will it take to complete the work?1.It was calculated that 75 men could complete a piece of work in 20 days. When work was scheduled to commence, it was found necessary to send 25 men to another project. How much longer will it take to complete the work?

Answer 1

Remaining people will do the work in 30 days.

CONCEPT-

the concept of time and work is we need to express the work in the form of men and time required.

here,

75men are doing work in 20 days. so,

work= 75×20____(1)

now same work is to be done by 50 men(25 left the work) in, let us say, x days

work= 50 × x_______(2)

equating both equations we get,

75×20=50×x

=> x = 30 Days.

hence the number of days will be 30.

Answer 2

Answer:

Step-by-step explanation:

75 men can complete the work in 20 days.

hence , work = 75x20

now 25 men left for another work so there are 50 men left. hence the work become 50 x X .   ( assume x as the number of days)

total work is same so,

75 x 20 = 50 x X

X= 75 x 20/ 50

= 30.

so 30 days need to complete the work