Question

A village, having a population of $4000$, requires $150$ litres of water per head per day. It has tank measuring $20m\times 15m\times 6m$. For how many days will the water of this tank last?

• A. $5$ days
• B. $3$ days
• C. $4$ days
• D. $2$ days

Answer 1

The correct option is B $3$ days

Quantity of water in tank$=20\times 15\times 6=1800m^3$

Quantity of water required per day for $4000$ people

$=150\times 4000=600000\ell$

$=600m^3$ ................ $1$ Cubic meter ($m^3$) is equal to $1000$ liters (L)

Number of days$=\frac{1800}{600}=3$ days