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25 women can complete a task in 60 days. After how many days from the start of the task should 5 more women join them so that the task is completed in
Question

25 women can complete a task in 60 days. After how many days from the start of the task should 5 more women join them so that the task is completed in 55 days?

A.

27

B.

30

C.

25

D.

20

Correct option is B

Given:

25 women can complete a task in 60 days.

We need to determine after how many days 5 more women should join so that the task is completed in 55 days.

Formula Used:

M1D1H1W1=M2D2H2W2 \frac{M_1 D_1H_1}{W_1}=\frac{M_2 D_2H_2}{W_2}

M = Number of Workers, D = Days , H = Hours,   W = Work

Solution:

Let , 5 more women join the work after x days.

25×60 25 \times 60  = 25x + 30(55 - x)

1500 = 25x + 1650 - 30x 

-5x + 1650 = 1500

-5x = -150

x = 30 days

5 more women should join after 30 days.

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