Question

Water flows into a tank, $150$ metres long and $100$ metres broad, through a pipe whose cross-section is $2$ cm by $1.5$ cm at the speed of $15$ km per hour. In what time( in hours), will the water be $3$ metres deep$?$

Answer 1

tank's length= 150 metres
breadth =100 metres
height=3 m
pipe length=2cm=0.02m
breadth=1.5cm=0.015m
speed of water = 15km/hr=15000m/hr
time in hr = volume of tank/volume of water flows in pipe in 1 hr
$t=\frac{150\times 100\times 3}{0.02\times 0.015\times 15000}$
$t=10000h$