Question:Of the three numbers ,second is twice the fist and is also thrice the third .If the average of the three numbers is `44`, the largest number is: 

A `24` 
B `36` 
C `72` 
D `108` 

+ Answer
C 

+ Explanation
Let `3rd` number be x.

Then,second number

`= 3x`.

;.First number 

`= 3x/2`.

`:. x + 3x + 3x/2`

`= (44 xx 3)`

`or  (11x)/2`

`= 44 xx 3`

`or x = 24`.

Largest number = 2nd number

`= 3x = 72`

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