Question

30 men can do a piece of work in 25 days. if the work is to be finished in 10 days how many should more men required​

Answer 1

Answer:

45 more men required to complete the work

Step-by-step explanation:

given,

M1= 30, D1= 25,

M2= x, D2= 10.

here W= M×D

W1= M1×D1. W2= M2×D2.

W1=W2 ( because same work )

hence,

M1×D1=M2×D2

M2= M1×D1/D2

= 30×25/10

= 75

75 men can complete the in 10 days

question is how many more men required to complete the work

we have 30 men already

then required men to complete the work is

= 75-30

= 45

45 more men required to complete the work.

Answer 2

Step-by-step explanation:

2nd method:

to complete a work in 25 days, no of men required = 30

to complete the work in 1 day , no of men required = 30 ×25

to complete the work in 10 days, no of men required = (30×25)÷10

= 75

extra men required = 75 - 30

= 45