Question

Alex’s gasoline consumption, g, varies inversely with the price of a gallon, p. Alex uses 22 gallons of gas per week when the price is $3.49 per gallon. How many gallons will he use if the price goes up to $3.89 per gallon? Round to the nearest gallon.

Answer 1

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Hi, my name is Stephen.

\[\frac{22g * 3.49}{gallon} = \frac{x gallons * 3.89}{gallon} \]

(as the price goes up, his usage goes down...)

X = 22*3.49/3.89 = 19.74 gallons
\[x = \frac{22 * 3.49}{3.89} = 19.74 gallons\]
Now, it's up to you to round it to the tenth.