Harriet is comparing the costs of calling cards. To use card A, the cost is $1.00 to connect and then $0.04 per minute. To use card B, it costs $0.65 to connect and then $0.06 per minute. For what number of minutes does it cost the same amount to use each card for a single call?

Question

texaschic101 · Answer

1 + .04m = .65 + .06m
now just solve for m and you will have your answer

anonymous · Answer

17.5 ?

texaschic101 · Answer

1 + .04m = .65 + .06m
1 - .65 = .06m - .04m
.35 = .02x
.35/.02 = x
17.5 = x

yes...you are correct.
17.5 or 17 1/2 minutes.