Question

4 men or 6 women can finish a piece of work in 20 days. In how many days can 6 men and 11 women finish the same work?

• A. 9 days
• B. 6 days
• C. 7 days
• D. None of these

Answer 1

The correct option is B 6 days

Here, a = 4, b = 6, n = 20, c = 6
and d = 11.
$\therefore$ Required number of days

$=\left(\frac{nab}{bc+ad}\right)days$

$=\left(\frac{20\times 4\times 6}{6\times 6+4\times 11}\right)days=6days$