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?

Answer 1

1 + .04m = .65 + .06m

Subtract .04m and .65 from both sides of the equation

.35 = .02m

Solve for m by dividing .35 by .02.

Answer 2

17.5