Solving word problems in cost comparisons using oil prices.
Fuel oil prices averaged $0.93375 in the winter of 1998, then shot up to $1.02 in
winter 1999. Calculate the additional fuel costs for a household that used 863 5/8
gallons of fuel oil during the winter of 1999.
https://brainmass.com/math/algebra/solving-word-problems-cost-comparisons-oil-prices-3453
Solution Preview
The change in the rate of oil price is given by the difference ...
Solution Summary
Cost comparisons are solved for using a variable.
$2.19