Question

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? (enter only the number.)

Answer 1

$1 + 0.04x = 0 .65 + 0.06x$
Solve that.
You get 50 min