Question

A customer paid a total of $6.00 for 68 copies at a print shop. Some copies were black and white copies, the rest were color copies.

• each black and white copy cost $0.08
• each color copy cost $0.15
Which system of equations can be used to find b, the number of black and white copies and c, the number of color copies that the customer paid for at the print shop?

Answer 1

D. b + c = 68

0.08b + 0.15c = 6.00

Explanation:

The total cost is $6.00

The total amount of copies is 68

To find the total cost, we multiply the amount of copies by the individual price. So we get

0.08b + 0.15c = 6.00

We add the amount of copies bought to get a total of 68, so we get this equation:

b + 6 = 68