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Engineering
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9. | A car owner buys petrol at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Rs. 4000 each year? | |
A. | Rs. 7.98 | |
B. | Rs. 8 | |
C. | Rs. 8.50 | |
D. | Rs. 9 | |