Problems on ages and number

Q1. When 15 is subtracted from 7 times the number, the result is 10 more than twice of the Number. Find the number. A)5 B)15 C)7.5 D)4

Q2. Sum of a rational number and its reciprocal is 13/6 Q2. Sum of a rational number and its reciprocal is 13/6. Find the number. A)2 B)3/2 C)4/2 D)5/2

Q3. The sum of the square of three numbers is 138, while the sum of their products taken two at a time is 131.Their sum is A)15 B)20 C)25 D)35

Q4. A number is doubled and 9 is added Q4.A number is doubled and 9 is added. If the resultant is tripled, it becomes 75. What is the number? A) 8 B) 10 C) 12 D) 4

Q5. Raju age after 15 years will be 5 times his age 5 years back, what is the present age of Raju. A)15 B)14 C)10 D)8

Q6. The sum of the ages of a father and son is 45 years Q6. The sum of the ages of a father and son is 45 years. Five years ago, the product of their ages was four times the father’s age at that time. The present age of father and son A)34,11 B)35,10 C)36,9 D)40,5

Q7. Ten years ago, P was half of Q in age Q7.Ten years ago, P was half of Q in age. If the ratio of their present ages is 3:4, what will be the total of their ages A)35 B)34 C)45 D)25

Q8. Ratio between Rahul and Deepak is 4:3 Q8.Ratio between Rahul and Deepak is 4:3. After 6 years, Rahul age will be 26 years. What is Deepak present age. A)14 B)15 C)20 D)22

Q9. Sachin was twice as old as Ajay 10 years back Q9. Sachin was twice as old as Ajay 10 years back. How old is Ajay today if Sachin will be 40 years old 10 years hence A) 18 B) 25 C) 15 D) 20

Q10. Average age of A and B is 24 years and the average age of B,C and D is 22 years. The sum of the ages of A,B,C and D is A) 90 B) 98 C) 120 D) Data inadequate

Q11. A Man is 24 years older than his son Q11. A Man is 24 years older than his son. In two years his age will be twice the age of his son. The present age of his son is A) 20 years B) 21 years C) 22 years D) 24 years