Question

Marcella and Ruben bought some party supplies. Marcella bought 3 packages of
balloons and 4 packages of favors for $14.63. Ruben bought 2 packages of balloons and
5 packages of favors for $16.03. Find the price of a package of balloons.
3 b + 4 f = 14.63

2 b + 5 f = 16.03

solve the system for b

15 b + 20 f = 73.15

8 b + 20 f = 64.12

subtracting equations (to eliminate f) ... 7 b = 9.03

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