While in the store, your father purchases drinks for the six people in your van. Part of your

Mathematics

1 answer:

lianna [129]4 years ago

7 0

Answer: (2,4) They bought 2 sodas and 4 coffees.

Step-by-step explanation:

A. c + s=6 where c is the number of coffee and s is the number of sodas

B. 1.50c + 1.20s =8.40

C. -1.50 (c + s) =6(-1.50) we will multiply the first equation by -1.50 to eliminate the c

New equation; -1.50 - 1.50s = -9 -0.3s/-0.3=-0.6/-0.3 s=2

-150 + 1.20s = 8.40

So we know they bought 2 sodas. so we will plot 2 into the equation.

1.50c + 1.20(2)=8.40 c= 4

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