Q311
To do a certain work, the ratio of efficiency of A to that of B is 3 : 7. Working together, they can complete the work in 101/2 days. They work together for 8 days. 60% of the remaining work will be completed by A alone in:
To do a certain work, the ratio of efficiency of A to that of B is 3 : 7. Working together, they can complete the work in days. They work together for 8 days. 60% of the remaining work will be completed by A alone in:
A.
B.
4 Days
C.
5 Days
AnswerD.
Answer: Option C
Solution
Answer: Option C
Solution:
\begin{array}{*{20}{c}}
{}&A&{}&B \\
{{\text{Efficiency}} \to }&3&:&7
\end{array}