Answer:
64
Explanation:
The part of money he spent =3/4
Let the total money Otto has be 'x'.
Then according to the question, we have
3/4x = 48
Multiply 4 on both the sides, we get
3x = 48 X 4
Divide 3 on both the sides, we get
x = 48 X 4 / 3
x = 64!
BOOM!