Aarush and Maahi together can do a piece of work in 10 days. If Aarush alone can do the same work in 15 days, then how many days Maahi alone will take to do the same work?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 30
Let us assume that the number of goods manufactured by both is 'x'.
Thus, the Efficiency of both Aarush and Maahi to manufacture x products = x/10
And, the efficiency of Aarush to manufacture the same x products = x/15
Thus,
⇒ x/15 + (efficiency of Maahi) = x/10
⇒ efficiency of Maahi = x/10 - x/15
efficiency of Maahi = x/30
Thus, this equation tells us that Maahi can manufacture x products in 30 days.
Thus, the time taken by Maahi is 30 days to manufacture the same amount of goods.