How many sweatshirts were sold?

Question

One day a store sold 18 sweatshirts. White ones $9.95 and yellow ones cost $11.50. In all, $200.80 worth of sweatshirts were sold. How many of each color were sold?

Answer 1

What you need here is to set up a system of equations. Let x be the number of white sweatshirts and y be the number of yellow ones.

So we know that    x+y=18   (total number of white and yellow ones is 18)

We also know that white shirts cost 9.95 and yellow ones cost 11.50

So cost of sold white shirts is 9.95x and cost of sold yellow shirts is 11.50y

Putting it together,      9.95x+11.50y=200.80

So here are your two equations

 

x+y=18

9.95x+11.50y=200.80

 

Now solve for one variable using first equation, plug it into the second equation and get the values for x and y.

Hope it helps!