Question 828285
Last year Mr. Taylor travelled 15,000 km in his car and spent £1200 on petrol. This year he expects to travel 20,000 km. He estimates that the price of petrol has increased by 10% on what is was last year. 
How much should Mr. Taylor expect to pay for petrol this year? 
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unit cost last year = 1200/15000 = 0.08L per km
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New cost would be 1.1(0.08)L/km = 0.088L/km
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Ans: 20,000(0.088) = 1760L
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Cheers,
Stan H.
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