Question

Find the rational number between 3:5 and 4:5

Answer 1

3/5 = 18/30
4/5 = 24/30

Answer 2

A rational number between 3:5 and 4:5 is

3:5 = 3/5

4:5 = 4/5

If you want only one rational number, we can use the formula (a+b)/2 where a and b are given numbers.

Let a = 3/5 and b = 4/5

(3/5+4/5)/2

→ (7/5)/2

→ 7/10

One rational number between 3:5 and 4:5 is 7/10

Hope it helps