In a four numbers set, the second number is twice the first number, the first is one-third of the third and the third is 5 times the fourth. The average of the numbers is 24.75. The largest of these numbers is:  Choose the correct choice from the following answers
A) 9  B) 25  C) 30  D) 35  E) None of these
Explanation :   Let the fourth number be x.   Then, third number = 5x, first number = 5x/3   And second number = 10x/3   x + 5x + 10x/3 + 5x/3 = (33 x 4) or 11x = 132 or x = 12.   So, the numbers are 20, 40, 60 and 12.   Largest number = 60.   Answer : 35
<result>D</result>
In a four numbers set, the second number is twice the first number, the first is one-third of the third and the third is 5 times the fourth. The average of the numbers is 24.75. The largest of these numbers is: