Question

Peter and his four brothers combined all of their money to buy a video game. If 20% of the total money is Peter's, and $4.00 of the total money is Peter's, how much do all five brothers have combined?

Answer 1

for this case we have that $ 4 represents 20% of the price of the video game. Let "x" be the variable that represents the price of the game, so we make a rule of three:

4$ ----------> 20%

x -------------> 100%

`x = \frac {100 * 4} {20}\\x = 20`

Thus, the video game costs $20. Of those $20, $4 are from Peter, then his 4 brothers combined $16.

Among the 5 brothers combined $20

ANswer:

$20