Question

The average of three numbers is 77. The first number is twice of the second one and second number is twice of the third number. Find the three numbers?

A) 88,44,22
B) 133,66,33.
C) 40,20,10.
D) 44,22,11

Answer 1

The third number is 33, the second number is 66, and the first number is 132.

Therefore, the correct answer should be: option b) 132, 66, 33. (Avoiding typo error given in the option).

Step-by-step explanation:

Let's assume the third number is x.

So the second number is 2x, and the first number is 2 times the second number, which is 2 * 2x = 4x.

The average of the three numbers is 77.

So, (4x + 2x + x) / 3 = 77.

Simplifying the equation, we get:

7x / 3 = 77.

Multiplying both sides of the equation by 3, we get:

7x = 231.

Dividing both sides of the equation by 7, we get:

x = 33.

So the third number is 33, the second number is 2x = 2 * 33 = 66, and the first number is 4x = 4 * 33 = 132.