A is thrice as good a workman as B and together they can finish a work in 32 days. In how many days will B alone complete the same work?
Answer & explanation
Correct answer: option 4
As Given,
A is thrice as good a workman as B, therefore,
⇒ A : B = 3: 1 (Efficiency)
⇒ A + B can finish a work in 32 days = (3 + 1) x 32 = 128 units ..(Efficiency × Days = Total work)
⇒ B alone complete the same work in = \(\frac{128}{1}\) = 128 days ..(\(\frac{Work}{Efficiency}\) = Time ).
Therefore, B can complete the total work alone in 128 days.