w = 30 - y
9.95w + 13.50y = 337.55
Substitute 30-y for w in second equation and solve for y. Insert that value into the first equation and solve for w. Check by inserting both values into the second equation.
One day a store sold 30 sweatshirts. White ones cost $9.95 and yellow ones cost $13.50. In all $337.55 worth of sweatshirts were sold. How many of each color were sold?
How many white sweatshirts were sold___?
How many yellow sweatshirts were sold___?
3 answers
Thanks, I followed your formula, but can you tell me if my answer is correct? I got 19 white shirts and 11 yellow shirts?
+65