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If 12 men and 16 women can do a piece of work in 5 days and 13 men and

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Re: If 12 men and 16 women can do a piece of work in 5 days and 13 men and  [#permalink]

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New post 24 Sep 2018, 11:27
Hi Mo2men,

You CAN use that same logic on that question, but it requires a bit more work than you did. I've posted an explanation in that thread.

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Re: If 12 men and 16 women can do a piece of work in 5 days and 13 men and  [#permalink]

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New post 16 Jul 2019, 08:35
Bunuel VeritasKarishma : This solution is quick.


12M + 16W = 20% work per day (100%/5day)
13M + 24W = 25% work per day (100%/4day)

solving this equation you get M = 1% and W = 0.5%

7M + 10W = 7% + 5% = 12% work per day

total work = 100%
so no. of days required = 100%/12% = 8.3 days
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Re: If 12 men and 16 women can do a piece of work in 5 days and 13 men and  [#permalink]

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New post 16 Jul 2019, 23:49
nlx23 wrote:
Bunuel VeritasKarishma : This solution is quick.


12M + 16W = 20% work per day (100%/5day)
13M + 24W = 25% work per day (100%/4day)

solving this equation you get M = 1% and W = 0.5%

7M + 10W = 7% + 5% = 12% work per day

total work = 100%
so no. of days required = 100%/12% = 8.3 days


The issue is the highlighted part which takes a bit of time. If you can do it quickly, great!
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Re: If 12 men and 16 women can do a piece of work in 5 days and 13 men and   [#permalink] 16 Jul 2019, 23:49

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