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

\[22g/$3.49 = \chi g/$ 3.89\]
solve by cross multiplying
85.58= 3.49x
x= 24.5 gallons
the answer you want is 25 gallons