Answer:
The pair of sneakers cost 80 dollars.
The sweatshirt costs 40 dollars.
Step-by-step explanation:
Let x represent the pair of sneakers
Let y represent the sweatshirt
x + y = 120
The sweatshirt costs one-half the price of sneakers, which is represented by:
y = 1/2(x)
Use the substitution method
x + y = 120
x + 1/2(x) = 120
Multiply the equation by 2
2x + x = 240
3x = 240
x = 80
The cost of the sneakers is 80 dollars
To determine the cost of the sweatshirt subtract 120 by 80/
120 - 80 = 40
The cost of the sweatshirt is 40 dollars
