400
Julia sells baseball hats at her stand at the town's baseball diamond. She has 100 of last year's hats and 300 of this year's in stock. Customers will pay $7.00 more for this year's caps than for last year's. She needs to make $5,300 in sales. Assuming that she will sell all of her caps, how much should Julia charge for each type of cap?
What is 300m + 100n= 5,300 m=n+7
n=8 m=15