SOLUTION: During a sale an automobile dealer sold 69 cars and trucks. If she sold 27 more cars than trucks how many trucks did she sell?

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Question 176487: During a sale an automobile dealer sold 69 cars and trucks. If she sold 27 more cars than trucks how many trucks did she sell?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
let x and y be the number of cars and trucks sold respectively
:
x+y=69........eq 1
x=y+27........eq 2
:
take x's value from eq 2 and plug it into eq 1
:
y+27+y=69
:
2y=42
:
highlight%28y=21%29number of trucks sold
:
highlight%28x=y%2B27=21%2B27=48%29number of cars sold