John must buy four new tires for his car. He is considering buying tires that ar

Question

John must buy four new tires for his car. He is considering buying tires that are $25 a piece more than his regular brand, because the higher priced tires are supposed to increase his miles per gallon by 20%. If the tires are good for 48,000 miles and John drives an average of 1000 miles per month, gas costs $2.50 per gallon over the next 4 years, and John's car gets 30 miles to the gallon now (on the old tires), should John purchase the more expensive tires? A) Yes, because John will save about $660 dollars in gas over the four years but the new tires will only be $100 more. B) Yes, because John will save about $560 dollars in gas over the four years but the new tires will only be $100 more. C) No, because John will only save about $60 dollars in gas over the four years but the new tires will only be $100 more. D) There is not enough information given in the problem to make the decision.

Explanation / Answer

A)Yes, because John will save about $660 dollars in gas over the four years but the new tires will only be $100 more. 48000/30-48000/36=2000/3=666.66=660 (approx.) and cost of new tires is $25*4=$100 so, option A) is correct.

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