Question

A can do a piece of work in 11 days. B is 60% more productive than A. The number of days B will take to do the piece of work is:

• A.
• B. 8 days
• C. 9 days
• D. 20 days

Answer 1

The correct option is A

By the statement of question,

D_1E_1=D_2E_2\Rightarrow 11\times100=D_2.160 \\
\Rightarrow D_2=\frac{11\times 100}{160}= \frac{110}{16}=7\frac{1}{4}days