# Ages - Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Ages. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - The average age of five officers in a department is 32 years. If the age of their supervisor is added the average increases by 1. What is the supervisor's age?

A - 32 years

B - 48 years

C - 38 years

D - 42 years

### Explanation

`Supervisor?s age = 32 + 6 = 38 years`

Q 2 - There were 24 students in a class. One of them, who was 18 years old, left the class and his place was filled up by a new comer. If the average of the class thereby was lowered by 1 month, the age of the newcomer is -

A - 14 years

B - 16 years

C - 17 years

D - 15 years

### Explanation

```Total age decreased = 24 * 1 months = 24 months or 2 years.
Therefore, age of the new comer = 18 ? 2 = 16 years```

Q 3 - One year ago the ratio of Yamini?s and Gamini?s ages was 6 : 7 respectively. Four years hence this ratio would become 7 : 8. How old is Gamini?

A - 35 years

B - 30 years

C - 31 years

D - 36 years

### Explanation

```Let one year ago the ages of Yamini and Gamini be 6x and 7x years respectively.

Therefore, present ages will be 6x + 1 and 7x + 1 years respectively.

Now four years hence,

(6x + 1 + 4) / (7x + 1 + 4)  = 7/8
Or, (6x + 5)  / (7x + 5) = 7/8
Or, 49x + 35 = 48x + 40
Or, X = 40 - 35 = 5

Hence Gamini's present age = 7x + 1  = 7*5 + 1 = 36 years```

Q 4 - A man five times older in the comparison of his son in the present time but before the period of 5 year the father age in the comparison of his son was 10 times older . Find out present age of the father?

A - 45 year

B - 48 years

C - 49 years

D - 52 years

### Explanation

```Let the present age of the son be x year. Then , present age of the man  = 5x year
∴  (5x-5 = 10 (x-5) ⇒ 5x= 45 ⇒ x = 9
Age at the present time of the father is = (5*9) = 45 year```

Q 5 - If 1:2 is the present age ratio of two girls. But 1:3 age ratio of girls was 5 year ago . In that case find out the ratio of age after the period of 5 year?

A - 1:4

B - 2:3

C - 3:5

D - 5:6

### Explanation

```If the present age of two girls is x and 2x years. Then,
x-5/ 2x-5 = 1/3 ⇒ 3(x-5) =(2x-5) ⇒ x =10
5 year after their age ratio will be = x+5/ 2x+5 = 10+5/20+5 = 15/25 = 3/5= 3:5```

Q 6 - If 6 year is the difference of age of two boys ram and shyam at the present time. After the period of 4 year, the ratio of their age would be 3:4 . find out the shyam age at the present time?

A - 15 years

B - 18 years

C - 20 years

D - 25 years

### Explanation

```Let  x year is the ram present age then shyam present age will be (x+6)
X+4/ (x+6+4) = 3/4 = x+4/ x+10 = 3/4  ⇒ 4(x+4) = 3(x+10) ⇒ x = 14.
Hence , it proves that the present age of shyam = (14+6) = 20 year ```

Q 7 - If 4:1 is the ratio between mother and daughter and the sum of their age is 196. What should be the age ratio between mother and daughter after the period of 5 year?

A - 3:1

B - 10:3

C - 11:4

D - 14:5

### Explanation

```Let mother age be4 x year and her daughter age is x year.
4x*x = 196 ⇒ x2 = 49 ⇒ x = 7
Present age of mother is 7*4 = 28 year and son present age = 7 years.
Required ratio = (28+5) : (7+5) = 33 : 12   = 11 : 4```

Q 8 - If 45 year is the sum of mother and her son age. 5 year agoThe product of mother and son ages was 4 times in the comparison of mother present age. Find out the present age of mother and her son?

A - 25, 10 years.

B - 36, 9 years

C - 41, 18 years

D - 51 , 20 years

### Explanation

```Let mother present age be x yrs and son  age be  (45-x) yrs.
(x-5) (45-x-5) = 4(x-5) ⇒( x-5) ( 40-x) = 4( x-5) ⇒ 40-x =4 ⇒ x =36
Present age of mother is 36 yrs. And age of son is 9 yrs.```

Q 9 - The sum of the ages of five girl born at the interval of 3 years each is 50 years. Find out the youngest girl age?

A - 4 years

B - 8 years

C - 10 years

D - None of these

### Explanation

```Let the youngest girl age be x years. Then,
X+(x+3) +( x+6) +(x+9) +(x+12) = 50
⇒5x+30 = 50  ⇒ 5x= 20 ⇒ x =4
Required age = 4 yrs.```

Q 10 - Ajit age after 15 years will be 5 times his age 5 years back . what is the present age of ajit ?

A - 5 years

B - 10 years

C - 15 years

D - 50 years

### Explanation

```Let the present age of ajit be x years.
(x+15) = 5(x-5) ⇒ x+15 = 5x-25 ⇒ 4x= 40 =. X = 10```

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