Question

Select an equation to solve the problem. Then solve. Joaquin is saving $369 to buy a surf board. He saved $9 each week for 11 weeks. He wants to buy the surf board in 9 more weeks. How much does Joaquin need to save each week? Let m be how much money Joaquin needs to save each week. Select an equation to solve the problem. ? Solve the equation. M = Answer the question. Joaquin needs to save $ each week.

Answer 1

`9m = 270`

`m = \$30`

Joaquin needs to save $30 each week.

Explanation:

Total money required for buying a surf board = $369

Money saved every week for first 11 weeks = $9

Total money saved in first 11 weeks = 11
`*` 9 = $99

Joaquin wants to buy the surf board in 9 more weeks.

To find:

Money to be saved each week for the next 9 weeks so that the surf board can be bought?

Solution:

Let the money to be saved each week for the next 9 months = $
`m`

Total money to be saved in the next 9 months = $9
`m`

Now, let us find the remaining amount of money to be saved by subtracting the total money saved from the cost of surf board. And then compare it with $9
`m`.

`369 - 99 = 9m\\\Rightarrow 9m = 270`

Solving the equation, we get:

`m = \$30`

Therefore, Joaquin needs to save $30 each week.