A shirt and tie cost $50. The shirt costs $30 more than the tie. What is the cost of the shirt?
the cost of the shirt is $30
Tie = x
Shirt = x + 30
x + x + 30 = 50
2x + 30 = 50
2x = 20
x = 10
Tie = x = $10
Shirt = x + 30 = 10 + 30 = $40
Answer: Shirt = $40