1/4 of a number subtracted from 1/3 of the same number gives

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1/4 of a number subtracted from 1/3 of the same number gives 12. The number is ?

1. 144
2. 120
3. 72
4. 63

Correct Option: A

Let the required number is N.
Then, N/3 - N/4 = 12.
⇒ 4N - 3N = 144
∴ N = 144