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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?
Answer : C
Explanation
Supervisor?s age = 32 + 6 = 38 years
Q 2 - The average age of 30 boys in a class is 15 years. One boy aged 20 years, left the class, but two new boys came in his place whose ages differ by 5 years. If the average age of all the boys now in the class still remains 15 years, the age of the younger newcomer is :
Answer : B
Explanation
Let the age of younger boy be x years. Therefore age of older boy = (x+5) years Then, total age of 30 boys = 30*15 = 450 years Total age of 31 boys after two newcomers join = 450 - 20 +x + x +5 = 435 + 2x From the question, 435 + 2x = 31 * 15 Or, 2x = 465 - 435 Or, x = 15 years
Q 3 - A father is 30 times older than his son. 18 years later, he will be only thrice as old as his son. Father?s present age in years is:
Answer : C
Explanation
Let the age of the son be x years. So, father's age = 30x years. As per question, after 18 years, 30x + 18 = 3 (x + 18) Or, 27x = 54 - 18 Or, x = 36/27 = 4/3 Therefore father's present age = 30*4/3 = 40 years
Q 4 - If 8 :15 is the ratio of sunil and tarun ages than the ratio and tarun change after the period of 9 year and become 11:18 . Find out the age difference between sunil and tarun ?
Answer : B
Explanation
Let sunil age = 8 year and tarun age is = 15 x years. 8x+9 / 15x+9 =11/18 ⇒ 18 (8x+9) = 11(15x+9) ⇒ 144x +162 = 165x +99 ⇒21x = 63 ⇒ x =3 Difference between the ages = (15x-8x)= 45-24 = 21 years
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?
Answer : C
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 - What should be the present age of two person if 5:7 is the present age ratio of two person and 3:5 was the age ratio before the period of 16 year?
Answer : C
Explanation
If the present age of two persons are 5x years and 7x years. 5x-16/ 7x-16 =3/5 ⇒ 5(5x-16) =3(7x-16) ⇒ 4x= (80-48) = 32 ⇒ x =8 Hence, their present ages are 40 years and 56 years.
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?
Answer : C
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 - Yusuf is as much younger to ajay as he is older to pawan , if 48 year is the sum of ajay and pawan then what should be the present age of yusuf?
Answer : B
Explanation
Given A-Y = Y-P ⇒ A+P = 2Y Also A+P = 48 Year . so, 2j = 48 ⇒ y = 24 Hence, yusuf is 24 year old.
Q 9 - What should be the present age of A,B and C who have the present age in the proportion of 10 :11:12. 150 was the sum of the ages of all before the period of 5 years.
Answer : D
Explanation
If the present age of A,B and C be 10 x, 11x and 12x years. Sum of their ages now = (150+ 5*3) =165 years. ∴ 10x+11x+12x = 165 ⇒ 33 x = 165 ⇒ x = 5 So, their ages are 50, 55 and 60 years.
Q 10 - 15 year hence, a man will be just 4 times as old as he was 15 years ago . His present age is
Answer : A
Explanation
Let the present age of the men be x years. then (x+15) = 4(x-15) ⇒ 3x= 75 ⇒ x =25 Hence, the present age of the man is 25 years.