Question 818025: On a recent trip to the convenience store, you picked up 2 gallons of milk, 6 bottles of water, 6 snack-size bags of chips. Your total bill (before tax) was $25.50. If a bottle of water costs twice as much as a bag of chips, and a gallon of milk costs $2.30 more than a bottle of water, how much does each item cost?
How much does a snack-size bag of chips cost?
How much does a bottle of water cost?
How much does a gallon of milk cost?
Answer by FightinBlueHens(27)   (Show Source):
You can put this solution on YOUR website! You have the total: 25.50, and 2 gallons of milk at $2.30 each, so the milk will cost you 4.60.
4.60 from 25.50 is 20.40.
For every bag of chips you buy, a bottle of water costs twice as much, so if you buy 6 bags of chips, and we represent the price of a bag of chips as b, then the chips cost $6b, and the price of the water bottles is twice that amount so it's 2*6b because you also buy 6 bottles of water.
You add 6b to 2*6b or 6b + 12b to get the total price of the bags and the bottles of water. Together you have 18b = 20.40.
20.40/18 = 1.133...
So b, which is the cost of a bag of chips is 1.133 (The 3 is repeating)
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