Question

Peter and his four brothers combined all of their money to buy a video game. If 30% of the total money is Peter's, and $18.00 of the total money is Peter's, how much do all five brothers have combined?

Answer 1

The amount of money that all five brothers have combined is:

$ 60

Explanation:

Let the total cost that all the five brothers have combined be: $ x

Also, it is given that Peter contributes 30% of the total money and it constitutes to $ 18.

This means that 30% of total money=18

This means that:

`(30)/(100)* x=18\\\\\\(3)/(10)x=18\\\\\\3x=180\\\\\\x=60`

Hence, the total money is:

$ 60

Answer 2

Let the total amount combined be 100% and at $x.

Then, Peter's contribution of $18 represents 30% of $x.
Therefore,

30% of $x -----> $18
100% of $x ---> $x
Then,
x= (100*18)/30 = $60