Q321
A certain number of persons can complete a work in 34 days working 9 h a day. If the number of persons is decreased by 40%. Then how many hours a day should the remaining persons work to complete the work in 51 days?
A.
9
B.
10
AnswerC.
8
D.
12
Answer: Option B
Solution
Answer: Option B
Solution:
40\% \to \frac{{ - 2}}{5}\begin{array}{*{20}{c}}
{} \\
{ \to \,{\text{Men}}}
\end{array}