80% of a number is equal to the (4/5)th of the other number. What is the ratio between the first number and the second number?

Question: 80% of a number is equal to the 4/5 the of the other number. What is the ratio between the first number and the second number?

Answer:
80% = 80/100 = 4/5,
as 80% of a number is equal to the 4/5 the of the other number.
As 80% = 4/5.
The two numbers are similar so the ratio is 1 : 1