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?
Answer & explanation
Correct answer: option 3
Aarush + Maahi = 10 days, Aarush = 15 days,
⇒ Simplifying from the above diagram, we get efficiency of Maahi =1
⇒ Time required for Maahi to complete total work = \(\frac{30}{1}\) = 30 days