What is the gas value difference

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In 1985 gas cost 211.9 per gallon, and 17.64 to fill the entire tank. In 2000 gas cost 273.1 how much would it cost to fill the same tank, but in the year 2000?

Oct 23rd, 2017

I am assuming the cost of the gas is given in cents.  Tank capacity = 17.64/ 2.119 = 8.32 gal

The problem is about proportion.

Let x be the cost of gas

So 273.1/ 211.9 = x / 273.1 Therefore by cross multiplying we get 211.9 x = 273.1 x 273.1

x = 273.1 x 273.1 /211.9

x = 351.98

Cost to fill the tank = 3.5198 x 8.32 = $ 29.28

Answer : $ 29.28


Nov 26th, 2014

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