Question

How many men need to be employed to complete a job in 5 days if 10 men can complete half the job in 7 days?

Answer 1

28 men required to complete the job in 5 days

Answer 2

28 men can complete the job in 5 days.

Step-by-step explanation:

It is given that 10 men can complete half the job in 7 days.

Let x men can complete the job in 5 days.

Formula for time and work:

$\dfrac{n_1\times d_1}{w_1}=\dfrac{n_2\times d_2}{w_2}$

where, n is number of men, d is days and w is work.

$\dfrac{10\times 7}{\frac{1}{2}}=\dfrac{x\times 5}{1}$

$\dfrac{70\times 2}{1}=5x$

$140=5x$

Divide both sides by 5.

$\dfrac{140}{5}=x$

$28=x$

Therefore, the 28 men can complete the job in 5 days.

#Learn more

How many men need to be employed to complete a job in 5 days, if 15 men can complete 1/3 of the job in 7 days ?

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