Question: Steve bought $25 worth of groceries. He bought a gallon of milk for $3, two boxes of cereal for $3.5 each, 4 bananas for $.25 each, four apples that cost $.5 each and a number of boxes of cookies. The cookies cost twice as much per box as the gallon of milk. How many boxes of cookies did he get? Think carefully first, then make a decision:
He spent $7 on cereal because 2 x 3.5 = 7. He spent $1 on bananas because 4 x .25 = 1. He spent $2 on apples because 4 x .5 = 2. He spent 13 on everything but the cookies because 3 + 7 + 1 + 2 = 13. He spent $12 on cookies because 25 - 13 = 12. Each box of cookies is $6 because 3 x 2 = 6. He bought 2 boxes of cookies because 12 / 6 = 2. So the answer is 2.