Question
Of the four numbers, the first is twice the second, the second 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:
Answer: Option D
- Let the fourth number be a
Then, third number = 5a, second number = 5a 3 And first number = 10a 3 x + 5x + 5x 3 + 10x 3 = (24.75 x 4) or 11x = 99 or x = 9. So, the numbers are 9, 45, 15 and 30
Largest number = 45
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- Let the fourth number be a
Then, third number = 5a, second number = 5a 3 And first number = 10a 3 x + 5x + 5x 3 + 10x 3 = (24.75 x 4) or 11x = 99 or x = 9. So, the numbers are 9, 45, 15 and 30
Largest number = 45
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