Three CD’s are bought at an average cost of \$15 each. If a fourth CD is purchased, the average cost becomes \$16. What is the cost of the fourth CD?
Answer Choices
A. 16
B. 17
C. 18
D. 19
E. 20
Three CD’s are bought at an average cost of \$15 each. If a fourth CD is purchased, the average cost becomes \$16. What is the cost of the fourth CD?
Answer Choices
A. 16
B. 17
C. 18
D. 19
E. 20