A city has a population of 20,000 with an area of rapid filter as 40 m2 and an average filtration rate of 120000 litres/day/m2 of the area. What will be the rate of demand?
1
150 litres/head/day
2
112 litres/head/day
3
240 litres/head/day
4
186 litres/head/day