Answer:
Assuming the money is in dollars, You have $45 and your Brother has $9.
Step-by-step explanation:
Let be stand for the money owned by the Brother, and Y the money owned by You.
Y = 5*B [I have 5 times more money than my brother.]
Y + B = 54 [Our total is 54]
Substitute the first equation into the second by use the definition of Y (5*B):
Y + B = 54
(5*B) + B = 54 [Substution, since Y = 5*B,]
6B = 54
B = 9
Your Brother has 9 money units (e.g., $ or €)
Since you have 5 times your Brother's stash, You have 45 money units.
These two values (9 and 45) satisfy both requirements [You have 5 times your Brother's amount and the total (45 + 9 = 54) is 54.