If you can download 10 ring tones for your cell phone for $10 or you can download 11 ring tones for your cell phone for $10.50, then the marginal cost of the eleventh ring tone is
A) $0.50.
B) $10.00.
C) $10.50.
D) $20.50.

Question

Quizplus · Accepted Answer

The marginal cost of the eleventh ring tone is the additional cost incurred by downloading one more ring tone beyond the initial 10, which is $10.50 - $10 = $0.50.

If You Can Download 10 Ring Tones for Your Cell