A, B and C can do a work in 16 days, while A and B can do the work in 40 days. In how many days can C do the work alone?
Answer & explanation
Correct answer: option 1
A + B + C = 16 days,
A + B = 40 days,
⇒ A + B + C = 5, (Efficiency)
⇒ 2 + C = 5,
⇒ C = 3,
⇒ Time required by C to complete the work alone = \(\frac{80}{3}\) = 26.67 days. ..(\(\frac{Work}{Efficiency}\) = Time)