10 men can do a job in 15 days then 12 men can do the job in how manybdays
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15 women are equivalent to 12 men.
10 women are equivalent to 12*10/15 = 8 men.
12 men are changed to (8+7 ) = 15 men.
12 n = 15 , implies n = 15/12 = 5/4.
If men are changed n times, days will change by 1/ n times ,that is , here, 4/5 times.
4/5 of 10 = 8 .
In 8 days the work will over.
10 women are equivalent to 12*10/15 = 8 men.
12 men are changed to (8+7 ) = 15 men.
12 n = 15 , implies n = 15/12 = 5/4.
If men are changed n times, days will change by 1/ n times ,that is , here, 4/5 times.
4/5 of 10 = 8 .
In 8 days the work will over.
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