Question

explain 6th question step by step plzz urgent ​

Answer 1

Water will Last upto 3 DAYS.

Please refer to the image attached.

Answer 2

Population = 4000
Water use per day per person = 150liters
Total water required = total population * water used per day per person
= 4000* 150 liters

Total water in tank= 20* 15*6
= 1800 cubic meters
= 1800* 1000 liters
Number of days = total water / per day water used
Number days = 1800000/600000
= 3 days