Directly we can't take the ratio because both quantities are not in the same unit.
So converting 1 rupee and 25 paise into paise
We know that 1 rupee = 100 paise
So 1 rupee and 25 paise = 1x 100 +25 = 125 paise
Now ratio of both the quantities = 125 / 75
= 5:3