Q288
A, B and C can all together do a piece of work in 10 days, in which B takes 3 times as long as A and C together to do the work. In how many days can B alone do the work?
A.
50 days
B.
40 days
AnswerC.
10 days
D.
15 days
Answer: Option B
Solution
Answer: Option B
Solution:
\begin{array}{*{20}{c}}
{}&{\left( {A + C} \right)}&:&B \\
{{\text{Time}}}&1&{}&3 \\
{{\text{Efficiency}}}&3&{}&1
\end{array}