Tech Mahindra
Company
Numerical Ability
Age Problem
The age of Ritu’s mother is 6 times that of Ritu’s age. After 6 years it will be 3 times that of Ritu’s age. what is Ritu’s present age?
a. 4 years
b. 8 years
c. 6 years
d. 10 years
Read Solution (Total 13)
-
- let us consider 'm' be the ritu's mom's age and 'r' be the ritu's present age
Given: m=6r ;
m+6=3(r+6);
6r+6=3r+18;
as we solve for r, we get ritu's age as 4 years. - 8 years agoHelpfull: Yes(11) No(0)
- y=6x ~~~~~~~~~~~~~~~ equation 1
y+6=3(x+6)~~~~~~~~~~~~~~equation 2
Substituting the value of y in equation 2 :
6x+6=3x+18
6x-3x=18-6
3x=12
x=12/3
x=4
y=6x, so
y=6*4
y=24
Ritu's age is 4 years and her mother's age is 24 years.
- 8 years agoHelpfull: Yes(3) No(2)
- M=6R
M+6=3(R+6)
M+6=3R+18
3R=12
R=4y - 8 years agoHelpfull: Yes(1) No(0)
- (6x+6)/(x+6) = 3/1
x = 4 - 8 years agoHelpfull: Yes(1) No(0)
- Hit and trial 4 and . 4*6 =24, 24+6 =30 , 3*ritu age now 10
- 8 years agoHelpfull: Yes(0) No(3)
- present ages = 6x:x
6x+6 = 3(x+6)
6x+6=3x+18
3x=12
x=4 - 8 years agoHelpfull: Yes(0) No(0)
- m=6r
m+6=3(r+6)
6r+6=3r+6
3r=12
r=4
ans=a - 8 years agoHelpfull: Yes(0) No(0)
- 6x=y
3(x+6)=y+6
x:current age of ritu
y:current age of mother
on sloving x=4 - 8 years agoHelpfull: Yes(0) No(1)
- m=6r
m+6=3(r+6)= m= 3r+12
3r+12=6r
3r==12
r==4
m==24
- 8 years agoHelpfull: Yes(0) No(0)
- mother = 6x, ritu= x
after 6 years mother age will be 3 times means 6x+6 = 3(x+6)
by solving above eq we get 4 years - 8 years agoHelpfull: Yes(0) No(0)
- 3(x+6) = 6x+6
- 8 years agoHelpfull: Yes(0) No(0)
- present ages of ritu and her mother are x,6x
After six years her mother's age is 3 times age of ritu (x+6)3 = 6x+3=4 years - 8 years agoHelpfull: Yes(0) No(0)
- y=6x~~~~~~1 eq
y+6 = 3(x+6)~~~~~~~2 eq
solving both eq:
Ans will be 4 i.e. A option - 5 years agoHelpfull: Yes(0) No(0)
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