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Quiz Description :
Name : Problem on ages online test
Subject : Aptitude
Topic : Problem on Ages
Questions: 14 mcq type
Time Allowed : 20 min
Important for : RBI, CAT, GATE, SBI, IBPS, Railways, SSC, UPPSC, MPPSC, Insurance, TCS, WIPRO, IBM job interviews etc.
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 Question 1 of 14
1. Question
1 pointsA father said to his son,”I was as old as you are at the present at the time of your birth. If the father’s age is 38 years now, the Son’s age 5 years back was
CorrectExplanation – Let the son’s present age be x years then (38x)= x
2x=38
x= 19
Son’s age 5 year back – (195) = 14.
IncorrectExplanation – Let the son’s present age be x years then (38x)= x
2x=38
x= 19
Son’s age 5 year back – (195) = 14.
UnattemptedExplanation – Let the son’s present age be x years then (38x)= x
2x=38
x= 19
Son’s age 5 year back – (195) = 14.
 Question 2 of 14
2. Question
1 pointsA is 2 years older than B who is twice as old as C. If the total of the ages of A, B, & C be 27, then how old is B?
CorrectExplanation – Let C’s age be x years, then B’s age is 2x years, A’s age (2x+2) years then,
(2x+2)+2x+x = 27
5x= 25
x = 5
Hence, B’s age is 2x – 2×5= 10 years
IncorrectExplanation – Let C’s age be x years, then B’s age is 2x years, A’s age (2x+2) years then,
(2x+2)+2x+x = 27
5x= 25
x = 5
Hence, B’s age is 2x – 2×5= 10 years
UnattemptedExplanation – Let C’s age be x years, then B’s age is 2x years, A’s age (2x+2) years then,
(2x+2)+2x+x = 27
5x= 25
x = 5
Hence, B’s age is 2x – 2×5= 10 years
 Question 3 of 14
3. Question
1 pointsA man is 24 years older than his than his son, in 2 years his age will be twice the age of his son, then what is the present age of his son?
CorrectExplanation – Let son’s present age be x years, then his father’s age is (x + 24) years
(x + 24)+ 2 = 2(x + 2)
x+26= 2x+4
x = 22
IncorrectExplanation – Let son’s present age be x years, then his father’s age is (x + 24) years
(x + 24)+ 2 = 2(x + 2)
x+26= 2x+4
x = 22
UnattemptedExplanation – Let son’s present age be x years, then his father’s age is (x + 24) years
(x + 24)+ 2 = 2(x + 2)
x+26= 2x+4
x = 22
 Question 4 of 14
4. Question
1 pointsAt present, the ratio between the ages of Arun and Deepak is 4:3. After 6 years Arun’s age will be 26 years. What is the age of Deepak at present.
CorrectExplanation – Let the present ages of Arun and Deepak be 4x & 3x. Then,
4x+6 = 26 , 4x = 20, x = 5
Deepak’s age 3x = 3×5 = 15.
IncorrectExplanation – Let the present ages of Arun and Deepak be 4x & 3x. Then,
4x+6 = 26 , 4x = 20, x = 5
Deepak’s age 3x = 3×5 = 15.
UnattemptedExplanation – Let the present ages of Arun and Deepak be 4x & 3x. Then,
4x+6 = 26 , 4x = 20, x = 5
Deepak’s age 3x = 3×5 = 15.
 Question 5 of 14
5. Question
1 pointsSachin is younger than Rahul by 7 years, if their ages are in the respective ratio of 7:9, how old is Sachin
CorrectExplanation – Let Rahul’s age be x years then Sachin’s age (x7) years So,
(x7)/x = 7/9
9x63 = 7x
2x = 63
x = 31.5
Hence Sachin’s age (x7) = 31.57 = 24.5 years
IncorrectExplanation – Let Rahul’s age be x years then Sachin’s age (x7) years So,
(x7)/x = 7/9
9x63 = 7x
2x = 63
x = 31.5
Hence Sachin’s age (x7) = 31.57 = 24.5 years
UnattemptedExplanation – Let Rahul’s age be x years then Sachin’s age (x7) years So,
(x7)/x = 7/9
9x63 = 7x
2x = 63
x = 31.5
Hence Sachin’s age (x7) = 31.57 = 24.5 years
 Question 6 of 14
6. Question
1 pointsThe present ages of 3 persons in proportions 4:7:9, Eight years ago, the sum of their ages was 56. Find their present ages
CorrectExplanation – Let their present ages be 4x, 7x & 9x years then
(4x8)+(7x8)+(9x8) = 56
20x = 80
x = 4
then their present ages are 16,28,36
IncorrectExplanation – Let their present ages be 4x, 7x & 9x years then
(4x8)+(7x8)+(9x8) = 56
20x = 80
x = 4
then their present ages are 16,28,36
UnattemptedExplanation – Let their present ages be 4x, 7x & 9x years then
(4x8)+(7x8)+(9x8) = 56
20x = 80
x = 4
then their present ages are 16,28,36
 Question 7 of 14
7. Question
1 pointsAyesha’s father was 38 years of age when she was born while her mother was 36 years old when her brother 4 years younger to her was born. What is the difference between the ages of her parents?
CorrectExplanation – Mother’s age when Ayesha’s brother was born = 36 years
Father’s age when Ayesha’s brother was born = (38+4) = 42 years
then, the difference is (4236) = 6 years
IncorrectExplanation – Mother’s age when Ayesha’s brother was born = 36 years
Father’s age when Ayesha’s brother was born = (38+4) = 42 years
then, the difference is (4236) = 6 years
UnattemptedExplanation – Mother’s age when Ayesha’s brother was born = 36 years
Father’s age when Ayesha’s brother was born = (38+4) = 42 years
then, the difference is (4236) = 6 years
 Question 8 of 14
8. Question
1 pointsRaju’s age after 15 years will be 5 times his age 5 years back, What is the present age of Raju?
CorrectExplanation – Clearly, x+15 = 5 (x5)
4x = 40
x = 10
IncorrectExplanation – Clearly, x+15 = 5 (x5)
4x = 40
x = 10
UnattemptedExplanation – Clearly, x+15 = 5 (x5)
4x = 40
x = 10
 Question 9 of 14
9. Question
1 pointsThe ages of 2 persons differ by 20 years. If 5 years ago, the elder one be 5 times as old as the younger one, their present ages in years are
CorrectExplanation – Let their ages be x and (x + 20) years
5 (x5) = (x+205) then x = 10
So their present ages are 30 years and 10 years
IncorrectExplanation – Let their ages be x and (x + 20) years
5 (x5) = (x+205) then x = 10
So their present ages are 30 years and 10 years
UnattemptedExplanation – Let their ages be x and (x + 20) years
5 (x5) = (x+205) then x = 10
So their present ages are 30 years and 10 years
 Question 10 of 14
10. Question
1 pointsSachin was twice as old as Ajay 10 years back. How old is Ajay today if Sachin will be 40 years old 10 years back
CorrectExplanation – Sachin’s today age = 30 years
Sachin’s age 10 years back = 20 years
Ajay’s age 10 years back = 10 years
Ajay’s today age is 20 years.
IncorrectExplanation – Sachin’s today age = 30 years
Sachin’s age 10 years back = 20 years
Ajay’s age 10 years back = 10 years
Ajay’s today age is 20 years.
UnattemptedExplanation – Sachin’s today age = 30 years
Sachin’s age 10 years back = 20 years
Ajay’s age 10 years back = 10 years
Ajay’s today age is 20 years.
 Question 11 of 14
11. Question
1 pointsIn 10 years A will be twice as old as B was 10 years ago, if A is now 9 years older than B, then the present age of B is
CorrectExplanation – Let B’s age x years
then, A’s age = (x+9) years
(x+9+10) = 2(x? 10)
hence x = 39
IncorrectExplanation – Let B’s age x years
then, A’s age = (x+9) years
(x+9+10) = 2(x? 10)
hence x = 39
UnattemptedExplanation – Let B’s age x years
then, A’s age = (x+9) years
(x+9+10) = 2(x? 10)
hence x = 39
 Question 12 of 14
12. Question
1 points10 years ago A was half of B in age. If the ratio of their present ages is 3:4 then what will be the total of their present ages
CorrectExplanation – Let A’s age 10 years ago is x years
then B’s age 10 years ago be 2x
(x+10)/(2x+10) = 3/4
x = 5
So the total of their present ages is (3x+20) = 35 years
IncorrectExplanation – Let A’s age 10 years ago is x years
then B’s age 10 years ago be 2x
(x+10)/(2x+10) = 3/4
x = 5
So the total of their present ages is (3x+20) = 35 years
UnattemptedExplanation – Let A’s age 10 years ago is x years
then B’s age 10 years ago be 2x
(x+10)/(2x+10) = 3/4
x = 5
So the total of their present ages is (3x+20) = 35 years
 Question 13 of 14
13. Question
1 pointsThe ratio between the present ages of P and Q is 6:7, if Q is 4 years old than P then what will be the ratio of the ages of P and Q after 4 years
CorrectExplanation – Let P age and Q age is 6x and 7x
then 7x6x = 4
x= 4
So required ratio will be
(6x+4):(7x+4) = 28:32 or 7:8
IncorrectExplanation – Let P age and Q age is 6x and 7x
then 7x6x = 4
x= 4
So required ratio will be
(6x+4):(7x+4) = 28:32 or 7:8
UnattemptedExplanation – Let P age and Q age is 6x and 7x
then 7x6x = 4
x= 4
So required ratio will be
(6x+4):(7x+4) = 28:32 or 7:8
 Question 14 of 14
14. Question
1 pointsThe sum of the ages of the father and the son is 45 years. 5 years ago, the product of their ages are 4 times the father’s age at that time. The present age of father and son is
CorrectExplanation – Let son’s age be x years
then father’s age be (45x) years
(x? 5)(45? X? 5) = 4 (45x5)
hence (x? 5) = 4 so, x = 9
father’s age is (45x) which means (459)
36 years
IncorrectExplanation – Let son’s age be x years
then father’s age be (45x) years
(x? 5)(45? X? 5) = 4 (45x5)
hence (x? 5) = 4 so, x = 9
father’s age is (45x) which means (459)
36 years
UnattemptedExplanation – Let son’s age be x years
then father’s age be (45x) years
(x? 5)(45? X? 5) = 4 (45x5)
hence (x? 5) = 4 so, x = 9
father’s age is (45x) which means (459)
36 years