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51. A father's age was 5 times his son's age 5 years ago and will be 3 times son's age after 2 years, the ratio of their present ages is equal to:
Answer: Option C
Explanation:Lets assume father and son as x and y respectively.
So, five years ago.
=> x-5 = 5(9y-5) ------ (1)
After 2 years.
=> x+2 = 3(y+2) ------ (2)
By solving eq(1) & (2)
x/y=10/3.
Workspace
Wipro
52. The average age of a woman and her daughter is 16 years. The ratio of their ages in 7 : 1 respectively. What is the woman's age?
Answer: Option B
Explanation:The average age of a woman and her daughter is 16 years.
Sum of ages = 16*2=32 years.
The ratio of their ages in 7 : 1 say 7x and x.
Then 8x = 32
=> x=4
Hence, the age of woman = 7*4 = 28 years.
Workspace
Wipro
53. Three years ago, the average age of A, B and C was 27 years and that of B and C, 5 years ago was 20 years. A's present age is :
Answer: Option C
Explanation:Lets assume present ages of A, B and C as x,y, and z respectively.
Three years ago their ages were x-3,y-3,z-3.
Given:
=> (x-3+y-3+z-3)/3 = 27.
=> x+y+z=90.
and 5 years ago:
Then (x-5+y-5)/2=20.
=> y+z=50.
=> x=90-(y+z).
=> x=90-50 = 40 years.
Workspace
Wipro
54. Total of the ages of A, B ahd C at present is 90 years. Ten years ago, the ratio of their ages was 1: 2: 3. What is the age of B at present
Answer: Option C
Explanation:Let their ages 10 years ago is x, 2x and 3x years.
(x + 10) + (2x + 10) + (3x + 10) = 90 hence x= 10
B's present age = (2x + 10) =30 years.
Workspace
Accenture
55. The sum of ages of suresh and his father is 78 years.6 years hence father's age will be twice of suresh's age. Find present age of father.
Answer: Option A
Explanation:Lets assume suresh age = x years.
So, father age = (78-x) years.
Condition : 6 years hence
2* (x + 6) = (78 - x + 6)
=> 2x + 12 = 84 - x
=> 3x = 72
x = 24 years.
Father age = 78 - 24 = 54 years.
Workspace
Accenture
56. A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. Hence
the father's present age is
Answer: Option C
Explanation:Lets assume son's current age = x years
So, father's current age = 3x
After 15 years (condition)
2(x+15)=3x+15
Son's age = 15 years, and father's age = 45 years.
Workspace
Accenture
57. The ages of A and B are in the ratio of 8:5.if the sum of their ages is 39 years,what will be the ratio of their ages after 9 years?
Answer: Option D
Explanation:Ratio of A and B ages = 8:5
=> A's age = 8x and B's age = 5x
as per the conditon:
=> 8x+5x = 39
=> x=3;
After 9 years.
(8*3)+9 : (5*3)+9
=> 11:8
Workspace
Accenture
58. The sum of the ages of A,B and C was 52 three years ago.Four years ago B,who is a year younger than C,was 1 1/2 times as old as A.The sum of the ages of B and C two years hence,will be
Answer: Option C
Explanation:Present sum of ages of A,B & C = A+B+C = 52+9=61 ---(i)
Given B is a year younger than C, so B+1 = C ---(ii)
Also B-4=(A-4)*3/2
=> 2B - 8 = 3A-12
=> 2B -3A= -4 ---(iii)
Substituting C=B+1 from (ii) in (i)
A+2B=60 ---(iv)
On solving (iii) & (iv)
A=16, B=22 so C=23
So sum of the ages of B & C two year hence= (B+2)+(C+2)=24+25 = 49 Years.
Workspace
Capgemini
59. A certain company retirement plan has a rule of 70 provision that allows an employee to retire when the employee's age plus years of employment with the company total at least 70. In what year could a female employee hired in 1986 on her 32nd birthday first be eligible to retire under this provision?
Answer: Option A
Explanation:Lets assume it has taken x years to the female employee to reach the rule of 70.
So her age should be (32 + x).Also she gains x years of experience.
=> (32 + x) + x = 70
=> x = 19 years.
Workspace
TCS
60. In 4 years, Raj's father age twice as raj, Two years ago, Raj's mother's age twice as raj. If Raj is 32yrs old in eight yrs from now, what is the age of Raj's mother and father?
Answer: Option D
Explanation:Raj present age = 32 - 8 = 24.
After 4 years Raj's age is 28. and Raj's fathers age is 28 x 2 = 56, and his present age is 52.
Two years ago, Raj's age is 22. and his mother's age is 22 x 2 = 44. His mother's present age = 46
Workspace
TCS