A commuter has 245 in his commuter savings account. This Account changes by 15 dollars each week he buys a ticket. If the account changed by 240 for how many weeks of tickets did the commuter buy. If the commuter wants to buy 20 weeks of tickets how much mus he add to his account

240/15 = 16 weeks

20 * 15 = ?

Thank you I didn’t understand any of it but thanks to your help I understand it more.

To find how many weeks of tickets the commuter bought, we need to determine how much the account changed by and divide it by the amount it changes each week.

We are given that the account changed by 240 dollars, so we can set up the equation:

240 = 15 * x

To solve for x, divide both sides of the equation by 15:

240 / 15 = x

x = 16

So, the commuter bought tickets for 16 weeks.

Now, to find out how much the commuter must add to his account to buy 20 weeks of tickets, we need to calculate the difference between the desired number of weeks and the number of weeks the commuter has already bought.

The commuter has already bought 16 weeks of tickets, therefore:

20 - 16 = 4

Thus, the commuter must add enough money to cover 4 weeks of tickets to his account. Since each week costs $15, the amount he needs to add is:

4 * 15 = 60

Therefore, the commuter must add $60 to his account.