Question

If $15$ men complete a task in $3$ days, how many days will $9$ men take to complete it?

• A. $3$
• B. $4$
• C. $5$
• D. $6$

Answer 1

The correct option is C $5$

No. of men is inversely proportion to no. of days taken
$\therefore 15\times 3=K=9\times x$
$\Rightarrow 4s=9\times x\Rightarrow x=5$.