Question

$6$ pipes are required to fill a tank in $80mins$. How long will it take if only $5$ pipes of same type are used

• A. $36min$
• B. $56min$
• C. $76min$
• D. $96min$

Answer 1

Answer: (D)

$96min$

$6$ pipes = $80$ mins
$5$ pipes = $x$
$6\times 80$ = $5\times x$
$\frac{6\times 80}{5}$ = $x$
$6\times 16$ = $x$
$x$ = $96$