Question

the consumption of petrol for 1st 3 months is 88 L and for next 9 months is 152 L.Find the average consumptiom for the whole year

Answer 1

Total consumption =(88+152)l =240l
Total no. of months = 3+9= 12 months.
So,average consumption is 240/12= 2l

Answer 2

for 3 months =88liters 
for 9 months =152liters
that means he used 240 liters for one year
therefore average consumption is 240 liters