Question

Percy wants to buy a guitar that costs $56. He plans to save the same amount of money each week for 7 weeks. How much money should Percy save each week so that after 7 weeks he will have exactly enough for the guitar? $5 $8 $48 $64

Answer 1

$8

Explanation:

Let x represent the amount of money he has to save each week.

We can use this to set up an equation:

`7x=56`

Now, we have to "isolate the variable". This means we must have a resulting equation of
`x=\text{something}`.

In this case, we can use the Division Property of Equality to divide both sides by 7:

`(7x)/(7)=(56)/(7)\\x=8`

Therefore he must say $8 each week for 7 weeks so that he can buy the guitar.