Question

A village, having a population of4000, requires 150 litres of water per head per day. It has a tank measuring 20 m x 15 m x 6 m. For how many days will the water ofthis tank last?

Answer 1

Answer:

3 days

Step-by-step explanation:

volume of water tank=$length\times bradth\times\ height$

                                  =20 m x 15 m x 6 m

                                 =1800 $m^{3}$

$\because 1 \m^3 =1000\ litre$

hence ,volume of water = 1800 $m^{3}$ =1800$\times$ 1000litres

                                        =1800000 litres

since, water used by each person= 150 litres

and total population = 4000

therefore, total water used by population each day = 4000$\times$ 150 litres

                                                                     =600000 litres

therefore, no of days water of the tank last= $\frac {total\ volume\ of\ water}{water\ used by\ the\ population\ each\ day }$

                                           =$\frac {1800000}{600000}$

                                          = 3 days