Commuter has $245 in his commuter savings account. This account changes by -$15 each week he buys a ticket. If the commuter wants to buy 20 weeks of tickets,how muchmusthe add to his account
$55. Multiply 15 by 20 to find out exactly how much he needs for 20 weeks, which is $300. subtract 245 from 300 to find out how much more money he needs to add to his account.
