Answers

2016-03-16T08:40:24+05:30
For 3 months =88litersĀ 
for 9 months =152liters
that means he used 240 liters for one year
therefore average consumption is 240 liters
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2016-03-17T21:10:42+05:30
88 litres for 3 months.
152 litres for 9 months.
Total consumption of 12 months=88 litres+152 litres that is 240 litres.
therefore average consumption will be 240 litres divided by 3+9 months and therefore your answer will be 20 litres.
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