Latest self Aptitude Question SOLUTION: One grandfather has three grandchildren, two of their young children age difference is 3, eldest child age is 3 times 2nd child's age and eldest child's age is two times of sum of

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(#M40029184) SELF question Keep an EYE

One grandfather has three grandchildren, two of their young children age difference is 3, eldest child age is 3 times 2nd child's age and eldest child's age is two times of sum of other two children. What is the age of eldest child?

pratik mahajan (10 years ago)

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Sourangsu Bandyopadhyay  (10 years ago)

The solution can be derived as:
Let us assume that x is the youngest child, y is the middle one and z is the eldest child.
As per the question,
y-x=3.......1
z=3y.......2
z=2(x+y)....3
Now, y=z/3 ....4
x=y-3=>(z/3)-3 ......5

Substitute 4 and 5 in equation 3,
We get,
z=2((z/3)+(z/3)-3)
On solving,we get z=18.
Then, x=3 and y=6.
Thus X=3,Y=6 and Z=18. [Answer]

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