A car owner buys petrol at Rs. 57.50, Rs. 58, and Rs. 58.50 per liter for three successive years. What,
approximately, is the average cost per liter of petrol if he spends Rs. 40,000 each year?
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Answered by
3
Answer:
Total quantity of petrol consumed in 3 years =(
7.50
4000
+
8
4000
+
8.50
4000
)litres
=4000(
15
2
+
8
1
+
17
2
)litres
=(
51
76700
)litres
Total amount spent =Rs.(3×4000)=Rs.12000.
∴ Average cost =Rs.(
76700
12000×51
)=Rs.
767
6120
=Rs.7.98
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