A party company has chairs and tables for rent. The total cost to rent 9 chairs and 7 tables is $ 72. The total cost to rent 3 chairs and 5 tables is $42. What is the cost of chairs and tables?

Answer 1

9C + 7T = 72

3C +5T = 42

multiply by 3

9C+15T = 126

subtract

9C + 7T = 72 to get

8T = 54

T = 54/8 = $6.75 per table

3C = 42-5(6.75) = 42 - 33.75 = 8.25/3 = $2.75 per chair