Latest TCS Aptitude Question SOLUTION: MOTHER +DAUGHTER+INFANT AGE IS 74. MOTHER AGE IS 46 MORE THEN DAUGHTER AND INFANT. AND INFANT AGE IS 0.4 OF DAUGHTER. FIND DAUGHTERS AGE.

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(#M40010938) TCS Numerical Ability question Keep an EYE

MOTHER +DAUGHTER+INFANT AGE IS 74. MOTHER AGE IS 46 MORE THEN DAUGHTER AND INFANT.
AND INFANT AGE IS 0.4 OF DAUGHTER. FIND DAUGHTERS AGE.

Asked In TCS mayuri supe (11 years ago)

Unsolved Read Solution (8)

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Read Solution (8) :

mangz  (11 years ago)

M+D+I = 74 ..,.,.Equ..1

I=0.4D
M=D+0.4D+46

M=1.4D+46
put in equ 1
1.4D+46+D+0.4D=74 as I=0.4D
2.8D=74-46
D=28/2.8
D=10.,.,.,

Is this solution Helpfull? Yes (70) | No (1)  

viresh  (11 years ago)

2D+.8D+46=74
D=10

Is this solution Helpfull? Yes (18) | No (3)  

jaspreet kaur  (11 years ago)

according to ques:
m+d+i=74----(1)
m=46+(d+i)----(2)
i=0.4d----(3)
to find:
d=?
solution:
putting the value of eqn.(3) into eqn.(2)
m=46+(d+0.4d)----(4)
putting value of (4) and (3)into (1)
46+(d+0.4d)+d+0.4d=74
46+2.8d=74
2.8d=74-46=28
=>d=28/2.8=10
hence, daughter's age=10

Is this solution Helpfull? Yes (16) | No   

Sarchana kumari  (11 years ago)

M+D+I=74
M=D+I+46 & I=0.4D
SO,2D+2I+46=74
OR,2D+0.8D+46=74
on solving,we get D=10....ans

Is this solution Helpfull? Yes (6) | No   

shiv narayan sharma  (11 years ago)

m+d+I=74
d+i+46=m then 2d+2i=28 so 2*0.4i+2i=28
i=10 so d=0.4*10=4

Is this solution Helpfull? Yes (3) | No (12)  

vivek chauhan  (11 years ago)

answr:4 yrs

Is this solution Helpfull? Yes | No (23)  

Raj  (11 years ago)

@viresh why u wrote 0.8D?? instead 0.4d??

Is this solution Helpfull? Yes | No (9)  

bakya  (8 years ago)

Answer is 10

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