Final answer:
Yoko has $32, Greg has $24, and Brian has $48 in their wallets.
Step-by-step explanation:
Let's solve this problem step by step:
Let's assume that Yoko has 'x' dollars.
Greg has $8 less than Yoko, so Greg has 'x-8' dollars.
Brian has 2 times what Greg has, so Brian has '2(x-8)' dollars.
According to the given information, the total amount in their wallets is $104.
Therefore, the equation becomes:
x + (x-8) + 2(x-8)
= 104.
Now, simplify the equation:
x + x - 8 + 2x - 16
= 104.
Combine like terms:
4x - 24 = 104.
Add 24 to both sides:
4x = 128.
Divide both sides by 4:
x = 32.
So, Yoko has $32, Greg has $24, and Brian has $48 in their wallets.