Vishal alone can complete $\frac{1}{3}$ part of a work in 60 days and Ashok alone can complete $\frac{1}{4}$ part of the same work in 30 days. In how many days Vishal and Ashok together can complete the same work?
Answer & explanation
Correct answer: option 3
Vishal = \(\frac{1}{3}\)W = 60 days = 180 days,
Ashok = \(\frac{1}{4}\)W = 30 days = 120 days,
⇒ Time required for Vishal + Ashok to complete the work = \(\frac{360}{2 + 3}\) = \(\frac{360}{5}\) = 72 days ..(\(\frac{Work}{Efficiency}\) = Time)