One day a store sold 17 sweatshirts. white ones cost $10.95 and yellow ones cost $ 11.50. in all, $192.75 worth of sweatshirts were sold. how many of each color were sold?

Let x be the number of white sweats

Let y be the number of yellow sweats

$192.75 = $10.95x + $11.50y

X+y=17

X = 17-y

192.75 = 10.95 (17-y) + $11.50y

192.75 = 186.15 - 10.95y + 11.50y

192.75-186.15 = 0.55y

6.6/0.55 = y

12 = y

X+y = 17

X + 12 = 17

X = 5

(5, 12)