Answer:
12/40, 15/40, 18/40
Explanation:
1/4, 1/2 = 1/4, 2/4
Since, Three rational numbers cannot come in between 1/4 and 2/4, we multiply them with 10.
∴ 1/4 × 10 = 10/40
∴ 2/4 × 10 = 20/40
∴ Three rational numbers between 10/40 and 20/40 = 12/40, 15/40, 18/40
(You can add more numbers from between 10/40 and 20/40 if you need)