A commuter has 245 dollars in his commuter savings account. this account changes by -15 dollars each week he buys a ticket. In one time period, the account charged by -240 dollars. For how many weeks did the commuter buy tickets
How much must he add to his account if he wants to have 20 weeks worth of tickets in his account ?
240 / 15 = 16 weeks
(15 * 20) - 5 = ?
295
its 295 for the second question stupiiiid
=)
To find out how many weeks the commuter bought tickets, we need to calculate how much the account changed over the total time period.
The account started with 245 dollars and changed by -240 dollars, so we can set up the equation: 245 - 240 = 15n, where n represents the number of weeks.
Simplifying the equation, we get: 5 = 15n. Now, divide both sides of the equation by 15: 5/15 = n. This gives us n = 1/3.
Since we can't have a fraction of a week, we round up to the nearest whole number to get n = 1. Therefore, the commuter bought tickets for 1 week.
Next, let's calculate how much the commuter must add to the account to have 20 weeks worth of tickets.
Since the account balance decreases by 15 dollars each week, the total decrease over 20 weeks would be 15 * 20 = 300 dollars.
To have 20 weeks worth of tickets in the account, the commuter needs to add 300 dollars. Therefore, the commuter must add 300 dollars to their account.