YEARS AND AGE
QUESTIONS:
1.
kannan, Balan, Gopal and Krishnana are brothers. Balan age is 6 times less than his
grand pa age. Kannan age is half of the balan age. Krishan age is double of the
balan age and 1/3rd of the grand pa age. Gopal age is trible of the
kannan age.
a.1. The age
difference between these brothers are same –---yes/no
a.2. Find the present age of grandfather and all these brothers age.
a.1.
Ans: yes
Explanation: If the age of balan is X means
Kannan
age is X/2. Krishnan age is 2x, Gopal age is 3X/2.
The ascending order is x/2, x, 3x/2, and 2x. If x is 1 means, 0.5. 1, 1.5, and 2,
is the result. so the age difference is same.
a.2.
Ans: balan age is 12. Kannan age is 6, gopal age is 18, and krishnan is 24yrs.
Grand pa age is 72.
2.
Mala.
Lara and tara are cousin sisters, tara is 3times elder to lara, lara is 3times
elder to mala. After 9 years lara age will be 2/3rd of the tara’s
age and mala’s age will be sum of mala’s and tara’s present age, find the age of these sisters after 8years.
Ans:after mala is 9 yrs, lara is 11 yrs, and tara
is 17yrs.
present age is mala=1yr, lara=3yr, tara =9yrs
Explanation:
mala=M, lara=L, tara=T
T=3L=9M
L+9=2(T+9)/3=2X(3L+9)/3=2L+6
2L-L=9-6=3
Lara=3
T=3L
=Tara=3x3=9
9M=
3L,M=3x3/9= Mala=1
After
8years M=1+8=9, L=3+8=11, T=9+8=17
3.
Babu’s
son is 11 times youngers than him. After 2 years babu’s age will be 7times more than his sons age. Then what is
the present age of the Babu and his son.
Ans:
Babu is 33yrs and his son is 3yrs.
4.
Swetha
is aged double the age of her brother, their father age is exactly 4 time more
than swetha’s age. After 9 years father age will be exactly 9 times more than
his son’s presenet age. Find everyone’s
present age.
Ans:
swetha is 12yrs, brother is 6 yrs, and
father is 48 yrs,
Explanation:
If Swetha =S, Brother =B, Father =F
S=2B,
F=4S, F=4x2B=8B, F+6=9B=8B+6
9B-8B=6 , B=6.
S=2x6=12. F=4(12)=48yrs
5.
Rama
age is 1/3 of the barathan. Lakshmana age is double of the rama’s age.
Dasharathan age is ¼ th of the lakshman age. Eravanan age is ½ of the barathan
age and 3/4th of the lakshman age. Anumon age 50 he is 5 times elder
than dasarathan.
Order the name based on the age in descending order.
Find out the Age of the each persons.
Ans:
Barathan (60yrs), Anumon (50yrs), Lakshman (40yrs), Eravanan (30yrs), Rama(20yrs)
And Dasarathan (10yrs).
Explanation:
Barathan=B, Anumon=A, Lakshman=L, Eravanan=E, Rama=R, And Dasarathan=D.
A=50yrs=5D.,
L=D4, R=L/2,. B=3R, E=B/2
D=50/5=10
L=4(10)=40
R=40/2= 20
B=3(20)=60
E= 60/2=30