Latest TCS Aptitude Question SOLUTION: One grand father has 3 grand children two of the age difference is 3.Eldest child age is 3 times the youngest childs age and the eldest child age is two year more than the sum of o

• Placement Papers
• /
• TCS
• /
• Numerical Ability
• /
• Algebra

TCS Question Papers: TCS Interview Experience(90) TCS Company Profile

(#M40000841) TCS Numerical Ability question tcs recent puzzle Keep an EYE

One grand father has 3 grand children two of the age difference is 3.Eldest child age is 3 times the youngest childs age and the eldest child age is two year more than the sum of other two children. Find what is the age of the elders child?
a)18 b)22 c)30 d)10

Solution

let the age of eldest child is E , that of elder child is M and that of youngest child is Y, then according to the given conditions
E = 3Y ....(1)
E = 2 + M + Y ....(2)
now third condition is somewhat complicated,
according to this condition 'two of the age difference is 3' so three cases will arise 1) E - M = 3, ......(3)
2) M - Y = 3, ......(4)
3) E - Y = 3, ......(5)
if we take first of the 3 conditions then on solving (1), (2) and (3) we will get E = 3, M = 0, Y = 1 which is wrong
now on solving (1), (2) and (4) we will get E = 15, M = 8, Y = 5
similarly on solving (1), (2) and (5) we will get E = 4.5, M = 1, Y = 1.5
only E = 15, M = 8, Y = 5 is correct so age of elder child is 8 years

Like manish sir answer on facebook.

Asked In TCS Yashar (13 years ago)

Solved Read Solution (4)

Is this Puzzle helpful?   (16)   (6) Submit Your Solution Algebra

Read Solution (4) :

SUBHAJIT GUHA  (13 years ago)

Let the age of elder son is E,Middle Son is M,Younger son is Y
So M-Y=3
E=3Y
E=2+(Y+M)
After solving this equation
E=15

Is this solution Helpfull? Yes (27) | No (4)  

BJ  (13 years ago)

A=3C
A-B=3 OR B-C=3 OR A-C=3
A=2(B+C)
IF A=18 THEN C=6
18=2(B+6)
B=3
THUS C-B IS SATISFIED
SO ANS IS 18

Is this solution Helpfull? Yes (9) | No (29)  

debomala dey  (13 years ago)

A=3C
B-C=3
A=2+(B+C)
IF A=18,C=6
B=9
SO,B-C is satisfied
so ans is 18

Is this solution Helpfull? Yes (6) | No (36)  

baldev  (13 years ago)

let x,,y,z
x=3y
x=2+z
so now x-y=3
x-x/3=3
x=9/2 it is multiple of 22 so it should be answer u can take diff of any two and put the conditions u get the answer

Is this solution Helpfull? Yes (3) | No (13)  

Please Login to Read Solution.