Savings Comparison: Maria vs. Tom

Maria and Tom are saving money for a new video game. Maria has already saved $15 and plans to save $5 each week. Tom has saved $30 but plans to save $2 each week. We want to find out after how many weeks their savings will be equal.

Let w be the number of weeks they save. You can express their total savings with the following equations:

Maria's savings: $15 + 5w$

Tom's savings: $30 + 2w$

Please determine the number of weeks w until Maria and Tom have the same total savings.