SOLUTION: sally bought three chocolate bars and a pack of gum and $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00 find the cost of a chocolate bar and the cost of

Question 109461: sally bought three chocolate bars and a pack of gum and $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00 find the cost of a chocolate bar and the cost of a pack of gum.
Answer by nihat(10) (Show Source): You can put this solution on YOUR website!
Let X be the price of a chocolate bar and Y be the price of a pack of gum.
Then we can derive the following two equations from the problem.
3X + Y = 1.75 and 2X + 4Y = 2.00

Solved by pluggable solver: Linear System solver (using determinant)

Solve:

Any system of equations:

has solution

(x=0.5, y=0.25}

The price of a chocolate bar is $0.50 and the price of a pack of gum is $0.25.
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