Question

a village having a population of 4000 requires 150 litres of water per head per day it has head tank measuring 20 metre into 15 metre into 6 metre for how many days will the water of this tank last ​

Answer 1

Answer:

3 days

Step-by-step explanation:

Only 3 days

Answer 2

Answer:

• ★ 3 days

Step-by-step explanation:

★ Given :

• A village having a population of 4000 requires 150 litres of water per head per day

• it has head tank measuring 20 metre into 15 metre into 6 metre

★ To find :

• how many days will the water of this tank last

★ Solution :

: $\implies$ Here l = 20 cm

: $\implies$ b = 15 cm

: $\implies$ h = 6 m

The capacity of the tank = l b h m³

: $\implies$ = ( 20 × 15 × 6 ) m³ = 1800

: $\implies$ The water required per day = 150 litres

: $\implies$ The water required for 4000 per day

: $\implies$ day = ( 4000 × 150 ) l

: $\implies$ = ( 4000 × 150 / 1000 ) m³

: $\implies$ = 600 m³

: $\implies$ The No of days the water will

: $\implies$ = Capacity of tank / Total water required per day

: $\implies$ The volume of the water in the tank = l × b × h

: $\implies$ 20 m × 15 m × 6 m

: $\implies$ 1800 m ²

: $\implies$ The Number of days for which the water of the tank will last =

: $\implies$ 1800m ³ / 600m ³ = 3 days

Therefore, 3 days will the water of this tank last.

★ Additional information :

• we need to know the basic theory related to the chapter surface area and volume. First, we calculate the total Capacity of the tank by multiplying length, breadth and height. And then find the total required per day.

• And finally, we take the ratio of these two to get the Number of days water lasts.

• we need to care about the conversion of units from one dimension to the other dimension. And always remember that Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors.