SOLUTION: My son has a simple problem that I cannot solve.
A team has a car wash. They charge $3 for cars and $5 per truck. They was 19 vehicles and make a total of $71.00. How many cars
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Question 250266: My son has a simple problem that I cannot solve.
A team has a car wash. They charge $3 for cars and $5 per truck. They was 19 vehicles and make a total of $71.00. How many cars and trucks are washed?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A team has a car wash. They charge $3 for cars and $5 per truck. They was 19 vehicles and make a total of $71.00. How many cars and trucks are washed?
-----------------
C + T = 19 (total vehicles)
3C + 5T = 71 (total charges)
C + T = 19 --> T = 19-C
Sub for T in 2nd eqn
3C + 5*(19-C) = 71
3C + 95 - 5C = 71
-2C = -24
C = 12
------
T = 7
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