MCQ
Of the three numbers, the first is one-third of the second and twice the third. The average of these numbers is 27. The largest of these numbers is
Options
18
36
54
108
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Solution
54
Explanation:
Let the three numbers be a, b and c.
According to the question,
`"a"=1/3"b",` .......(b = 3a)
a = 2c .............(c = a/2)
and `("a"+"b"+"c")/3=27`
⇒ a + 3a + `"a"/2`= 27 × 3
⇒ 9a = 27 × 3 × 2
Concept: Ratio and Proportion (Entrance Exam)
Is there an error in this question or solution?
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