Latest reasoning Aptitude Question SOLUTION: Dhoni is now two fith of his older brother's age and two years from now he will be half of his older brother's age. Two years ago, dhoni was only one-fourth the age of his older br

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(#M40020496) REASONING Numerical Ability question age problem Keep an EYE

Dhoni is now two fith of his older brother's age and two years from now he will be half of his older brother's age.
Two years ago, dhoni was only one-fourth the age of his older brother age at that time.

How old is dhoni now ?

Asked In reasoning MAN (10 years ago)

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Devendra Marghade  (10 years ago)

4 years
If age of Dhoni=x & Older brother=y
(i) x=(2/5)y ,5x=2y ---(i)
(ii)x+2=(1/2)(y+2),2x-y=-2 ---(ii)
(iii)x-2=(1/4)(y-2),4x-y=6 ---(iii)
Solving any two equations, x=4, y=10

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vinay agarwal  (8 years ago)

Present age of dhoni's brother= b
present age of Dhoni= D= 2b/5-------(i)
Two years ago....
D-2=(b-2)/4------(ii)

Now put D's value in equn(ii)

2b b-2
____ - 2 = _______
5 4

After solving b=10 and D=2*10/5= 4

SO dhoni's present age is 4 years

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