Question

One calling card has a $.50 connection fee and charges $.02 per minute. Another card has a $.25 connection fee and charges $.03 per minute. After how many minutes would a call cost the same amount using either card?

Answer 1

Card 1
$0.50 + $0.02x = y
Card 2
$0.25 + $0.03x = y


Card 1: Charges $0.50 and adds 2 more cents for each minute

Card 2: Charges $0.25 and adds 3 more cents for each minute

$0.50 + $0.02(25) = $1.00
$0.25 + $0.03(25) = $1.00


At 25 minutes the cards charge the same amount of $1.00 .