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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 - 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 -
Answer : B
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?
Answer : D
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 - Prabhakar is 15 years older than Navin and Navin is 25 years younger than Ashok. Which of the following represents the difference between the ages of Ashok and Prabhakar?
Answer : D
Explanation
According to question, P = N + 15 A = N + 25 A - P = (N + 25) - (N + 15) = 10 years
Q 5 - If 100 year is equal to the sum of the ages of father and son. 2:1 was the ratio of father and son before the period of 5 years . Find out the ratio of ages which would be after the period 10 year.
Answer : B
Explanation
If x is the father age ,then son age will be (100-x) x-5/ (100-x)-5 =2/1 ⇒ (x-5)= 2(95-x) ⇒ x =-5= 190 -2x ⇒ 3x =195 ⇒ x =65 father age = 65 yrs. And son age = 100-65 = 35 year required ratio = (65+10) / (35+10) =75/45 = 5:3
Q 6 - Suraj was thrice as old as karan 6 year before. Suraj will be 5/3 times as old as karan 6 year hence. What should be the age of karan at the present time?
Answer : A
Explanation
Before 6 year if suraj age is x year then karan age will be 3x year. Suraj age at the present time = (x+6) and karan age (3x+6) yrs. Suraj age after 6 year = (x+12) year Karan age after 6 year = (3x+12) year (3x+12) =5/3(x+12) ⇒ 9x+36 = 5x+60 = 4x = 24 ⇒ x =6 Karan age at the present time = 6+6 = 12 years.
Q 7 - If Ram and Sham have 36 year and 16 year age . After how much time ram age would be double as old as sham ?
Answer : D
Explanation
Let it be in x years. Then, 36+x = 2(16+x) ⇒ x =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.