On the first day of the year, you have $700 in your bank account. You spend $35 per week. Your friend starts the year with $450 in his bank account. He saves $15 per week. Solve the equation 700 – 35w = 450 + 15w to find out how many weeks, w, it will take for you and your friend have the same amount of money in your accounts ANSWER -
700-35w=450+15w
Add 35w to both sides and subtract 450 from each side to get
250=50w
Now divide 50 from both sides to get 5 weeks