A village has a population of 4000, requires 150 litres water per head per day. It has a tank measuring 20 m, 15 m, and 6 m. How many days for the water is sufficient enough once the tank is made full?
[3 marks]

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Solution

Volume of the tank $= l \times b \times h$
$= 20 m \times 15 m \times 6 m$
$= 1800 m^{3}$ [∵ $1 m^{3} = 1000 l i t r e s$ ]

So, volume of tank $= 1800000 l i t r e s$

[1.5 marks]

Volume of water consumed by 1 person in 1 day $= 150 l i t r e$

Total volume of water consumed in a day by total population $= 150 \times 4000$

[0.5 mark]

Required number of days $= \frac{V o l u m e o f tan k}{t o t a l v o l u m e o f w a t e r c o n s u m e d i n 1 d a y} = \frac{1800000}{150 \times 4000} = 3 d a y s$
[1 mark]

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[3 mark]

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A village has a population of 4000, requires 150 litres water per head per day. It has a tank measuring 20 m, 15 m, and 6 m. How many days for the water is sufficient enough once the tank is made full? [3 marks]

A village has a population of 4000, requires 150 litres water per head per day. It has a tank measuring 20 m, 15 m, and 6 m. How many days for the water is sufficient enough once the tank is made full?
[3 marks]