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A car owner buys petrol at Euro 7.50, Euro 8 and Euro 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Euro 4000 each year?
a)Euro 7.98
b)Euro 8
c)Euro 8.50
d)Euro 9
Read Solution (Total 2)
-
- petrol used in 1st yr = 4000/7.5 = 533.33 ltr
petrol used in 2nd yr = 4000/8 = 500 ltr
petrol used in 3 rd year = 4000/8.5= 470.59 ltr
Total petrol used for euro 12000 in 3rd yrs = 1503.92 ltr
Average cost per litre = 12000/1503.92 = Euro 7.98 ...... option a)
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