Question 81

Of the 3 numbers whose average is 22, the first is $$\frac{3}{8^{th}}$$ the sum of other 2. What is the first number?

Solution

Let say, first number is x and other two numbers are y and z.

So, (x+y+z)=66.

And, x=(3/8)(y+z)

or, (y+z)=8x/3 .

So, x+(8x/3)=66.

or, x=(66×3)/11=18.

D is correct choice.

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