Question

A completes $\frac{7}{20}$ of a work in 10 days. Then he completes the remaining work with the help of B in 5 days. The time required for A and B together to complete the entire work is :

• A. $\frac {100}{29}$ days
• B. $\frac {100}{13}$ days
• C. $\frac {100}{17}$ days
• D. $\frac {200}{13}$ days

Answer 1

Answer: (B)

$\frac {100}{13}$ days

Answer 2

The correct option is (B):$\frac {100}{13}$ days