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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? ?->(Show Answer!)
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1. 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?





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  • By: guest on 01 Jun 2017 05.44 pm
    Total quantity of petrol
    consumed in 3 years = 4000 + 4000 + 4000  litres 7.50 8 8.50 = 4000 2 + 1 + 2  litres 15 8 17 = 76700  litres 51 Total amount spent = Rs. (3 x 4000) = Rs. 12000. Average cost = Rs. 12000 x 51 = Rs. 6120    = Rs. 7.98 76700 767
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