AMC 10A 2016 Problem 3

For every dollar Ben spent on bagels, David spent 25 cents less. Ben paid \$ 12.50 more than David. How much did they spend in the bagel store together?

Answer Choices
A. \$ 37.50
B. \$ 50.00
C. \$ 87.50
D. \$ 90.00
E. \$ 92.50