Of the three numbers, the first is twice the second and

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Of the three numbers, the first is twice the second and is half of the third. if the average of three number is 56. the smallest number is ?

1. 24
2. 36
3. 40
4. 48

Correct Option: A

Let the second number be N.
Then, first number = 2N and third number = 4N
∴ 2N + N+ 4N/3 = 56
⇒ 7N = 3 x 56
∴ N = 3 x 56/7 = 24
So, the smallest number is 24.