Please help!

Suppose one girl saves $10 every week. Another girl already has $21 and saves $3 every week.
Write and solve an equation to determine when the two girls will have the saved the same amount of money.
So far I have these expression for each girl: one girl has 10w
another girl has 21+3w
Hope someone can help me, thanks.

You are off to a good start. Now set

21 + 3w = 10 w
and solve for w.
7w = 21
w = ?

w = 21

Thank you. That helps a lot.

good start now st December help me thnks Hope someone can help me That helps a lot answe this first

To determine when the two girls will have saved the same amount of money, we need to set up an equation and solve it.

Let's say "w" represents the number of weeks since they started saving.

For the first girl, her savings can be represented by the expression: 10w.
For the second girl, her savings can be represented by the expression: 21 + 3w.

We want to find the number of weeks where their savings are equal, so we can set up the following equation:

10w = 21 + 3w

Now, let's solve the equation to find the value of w:

Subtract 3w from both sides:

10w - 3w = 21

Combine like terms:

7w = 21

Divide both sides by 7 to solve for w:

w = 21 / 7

Simplifying the right side:

w = 3

Therefore, the two girls will have saved the same amount of money after 3 weeks.