Question

A work is done by $10$ workers in $6$ hours? How many workers will be required to do the same work in $4$ hrs?

• A. $10$
• B. $15$
• C. $20$
• D. None of these

Answer 1

Answer: (B)

$15$

It is inverse variation.

$6\times 10=4\times x$
$\Rightarrow x=\frac{6\times 10}{4}=15workers$