A new intermediate algebra textbook sells for $80 and a used intermediate algebra textbook sells for $75. How many new textbooks are sold if the receipts for 129 new and used textbooks are $10,145?
A) 94 new textbooks
B) 122 new textbooks
C) 137 new textbooks
D) 98 new textbooks

Question

Quizplus · Accepted Answer

The total cost can be represented by the equation 80x + 75(129-x) = 10,145, where x is the number of new textbooks. Solving for x gives x = 94.

A New Intermediate Algebra Textbook Sells for $80 and a Used