Posted by CURLEY on .
A STORE SOLD 18 SWEATSHIRTS. WHITE ONES COST $9.95 AND YELLOW ONES COST $11.50. IF $202.35 WORTH OF SWEATSHIRTS WERE SOLD, HOW MANY OF EACH WERE SOLD?

Algebra 
PsyDAG,
First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you.
Let x = # of white and y = # of yellow.
x = 18 y
9.95x + 11.5y = 202.35
Substitute 18y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.