Question

Among four given numbers, the first number is twice the second, the second number is 33.33% of the third and the fourth is 20% of the third. The average of the numbers is 49.50. Which is the largest of the given numbers?

• A. 18
• B. 30
• C. 60
• D. 50
• E. None of these

Answer 1

The correct option is E None of these

Let the fourth number be $x$.
Then, third number = $5x$, second number = $\frac{5x}{3}$ and first number = $\frac{10x}{3}$.
$\to x+5x+\frac{5x}{3}+\frac{10x}{3}=48.50\times 4$
$x=18$
$\therefore$ The numbers are 18, 90, 30, 60.