Question #13191

Ashley went to the gas station on Saturday and bought 2 Gatorades as well as 2 Red bulls and her total cost was $ 10. she returned the next saturday and bought 3 gatorades and 4 red bulls and this time her total cost was $18. how much did a gatorade n red bull cost?

Expert's answer

Let one gatorade costs x and one red bull y

We can construct the following two equations:

2x+2y=10& => x=5-y

3x+4y=18

3(5-y)+4y=18

15-3y+4y=18

y=3

Therefore x=5-3=2

Answer: $2, $3

We can construct the following two equations:

2x+2y=10& => x=5-y

3x+4y=18

3(5-y)+4y=18

15-3y+4y=18

y=3

Therefore x=5-3=2

Answer: $2, $3

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