Question

In July the price of a gallon of gas at Quick Fuel Gas Station rose 12%. In August it fell 15% of its final July price, ending the month at $2.29. What was the price at the beginning of July?


original price ---- x
(1.12)(.85)x = 2.29
x = ......
$X/gal. at beginning of July.
$1.12X/gal. after July increase.

Aug: 0.85 * $1.12X/gal. = $0.952X/gal..
0.952X = 2.29,
X = $2.41/gal.

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