Math, asked by Nazee, 1 year ago

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 ?

Answers

Answered by Jahnvi97

15 men can complete 1/3 job in 7 days
15 man can finish the job in = 7*3 = 21 days
1 man can finish the job = 21*15 = 315 days

So 1 man can do in 1 day = 1/315 of the work
1 man can do in 5 days = 1/315 * 5 = 1/63 the work

In 5 days, 1/63 of the work is done by 1 man
So in 5 days, 63 men can finish the work.

Jahnvi97: thanks!:)

Jahnvi97: can you plz mark my answers as best?

Nazee: am new to this site , you are telling me to rate ur answer rite

Jahnvi97: no...

Nazee: where is the option to mark ur answers as best, can u pls tel me

Jahnvi97: it will not come now..when someone else answers it, then the option will come

Nazee: oh k k i understood, thank u

Jahnvi97: :))

Jahnvi97: Thank you!!

Answered by saniarisha

15 men are required to do 1/3 part of a job in 7 days
15 men can complete the same job in = 7*3 days
= 21 days
1 man can complete the job in = 21*15 days
= 315 days

therefore , 1 man can complete in 1 day = 1/315 parts of the work
1 man can complete in 5 days = 1/315 * 5 of the work
= 1/63 of the work

therefore, in 5 days, 63 men can complete the work. [1/(1/63)]

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