Question

10 person begin to work together on a job but after some days 4 persons leave . As a result the job which could have been completed in 40 days is completed in 50 days . How many days after the commencement of the work did the 4 persons leave?

Answer 1

They work for 25 days.

Step-by-step explanation:

Consider the provided information.

10 person can complete a work in 40 days.

1 person's 1 day work is = $\frac{1}{10\times40}$

Let x is the number of days 4 person work.

Thus, 50-x is the number of days 6 person work (10 person - 4 person=6 person ).

$\frac{1}{400}\times10x+ \frac{(50-x)6}{400} =1$

$\frac{x}{40}+ \frac{3(50-x)}{200} =1$

$5x+150-3x=200$

$2x=50$

$x=25$

Hence, they work for 25 days.

#Learn more

A man has some hens and some cows. if the number of feer 12:35, find out the numbers of hens , if number of head alone is 48.

a)24

b)26

c)28

d)30

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