Question

Which of the following is not equivalent to the rational number 12/5

1) 2.4
2) 9/4
3) 2 2/5
4) 36/15​

Answer 1

2) 9/4

Explanation:

12/5 in decimal form is 2.4. As a mixed number, 12/5 is 2 2/5. And, 12/5 is just a reduced form of 36/15. So, the only answer it can be is answer 2: 9/4