Problema Solution
Last summer the price of gasoline changed frequently. One station owner noticed that the number of gallons he sold each day seemed to vary inversely with the price per gallon. If he sold 2800 gallons when the price was $4.20, how many gallons could he expect to sell if the price fell to $3.80?
Answer provided by our tutors
Let 'x' represent the number of gallons sold at $3.80 per gallon.
Since the number of gallons varies inversely with the price per gallon we have:
3.80x = 4.20*2800
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click here to see the equation solved for x
........
x = 3,094.74 gal
The station owner can expect to sell 3,094.74 gallons at the price of $3.80 per gallon.