Madan and Mayur together can complete a work in 12 days. Madan alone can complete it in 20 days. If Mayur does the work only for half a day daily, then in how many days Madan and Mayur together will complete the work?
Mayur's 1 day's work = 1/12 - 1/20 =1/30
Now, (Madan + Mayur)'s 1 day's work = 1/20+1/60=1/15
Mayur works for half day only.
So, Madan and Mayur together will complete the work in 15 days.
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