$10$ Men begin to work together on a job, but after some days, $4$ if them left the job. 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 $4$ men level?

25

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Solution

The correct option is A $25$
$10$ Men begin work
It could been done in $40$ days.
Let $4$ men left after x days.
Left days are $40 - x$ if they do not left and $50 - x$ if they left.
$(40 - x) 10 = (50 - x) 6$
$400 - 10 x = 300 - 6 x$
$1000 = 4 x$
$x = 25$ days.

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10 Men begin to work together on a job, but after some days, 4 if them left the job. 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 men level?

The correct option is A 2510 Men begin work It could been done in 40 days.Let 4 men left after x days.Left days are 40−x if they do not left and 50−x if they left.(40−x)10=(50−x)6400−10x=300−6x1000=4xx=25 days.

$10$ Men begin to work together on a job, but after some days, $4$ if them left the job. 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 $4$ men level?

The correct option is A $25$
$10$ Men begin work
It could been done in $40$ days.
Let $4$ men left after x days.
Left days are $40 - x$ if they do not left and $50 - x$ if they left.
$(40 - x) 10 = (50 - x) 6$
$400 - 10 x = 300 - 6 x$
$1000 = 4 x$
$x = 25$ days.