s = price of shirt
v = price of video game
b = price of book
A shirt, a video game, and a book together cost $170 means:
s + v + b = 170
The shirt costs $59 means:
s = 59
The video game costs $36 more than the shirt means:
v = s + 36 = 59 + 36 =$95
Put this values in equation:
s + v + b = 170
59 + 95 + b = 170
154 + b = 170
Subtract 154 to both sides.
b = $16
v - b = $95 - $16 = $79
The book cost $79 less than the video game.
A shirt, a video game, and a book together cost $170. The shirt costs $59. The video game costs $36 more than the shirt. How much less does the book cost than the video game?
1 answer