At the beginning of the summer Molly decided to add a little money into her savings account every week. After seven weeks her account had $175. At the end of 15 weeks her account had $375. Assumed that she put the same amount of money into her savings account every week and will continue to do so. Can some plz tell me what the expression for this problem is??
$175/7 = $25 per week
$375/15 = $25 per week
$25(#weeks) = total
To find the expression for this problem, let's break it down step by step.
First, we need to find the amount Molly added to her savings account every week.
We know that after seven weeks, her account had $175. So, we can determine that she added a total of $175 in seven weeks.
Therefore, the amount she added each week can be found by dividing $175 by 7:
Amount added per week = $175 / 7 = $25
Now, we need to determine how much Molly will have after a certain number of weeks.
We are given that at the end of 15 weeks, her account had $375. This represents the total amount she added, plus the initial amount she had in the account.
Since we know that Molly added $25 per week and she saved for 15 weeks, the total amount she added can be found by multiplying $25 by 15:
Total amount added = $25 * 15 = $375
Now we can express the problem using an equation:
Initial amount + (Amount added per week * Number of weeks) = Total amount
Let "x" represent the initial amount Molly had in her savings account.
So, the expression for this problem is:
x + ($25 * number of weeks) = total amount
where "x" is the initial amount, "$25" is the amount added per week, "number of weeks" is the number of weeks Molly saves for, and "total amount" is the final amount Molly has in her savings account.