Problem On Age

1.The sum of ages of 4 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child? A)7 yr B)8yr C)6yr D)5yr Answer : Option B Explanation: Let the ages of children be x, (x + 3), (x + 6), (x + 9)years. Then, x + (x + 3) + (x + 6) + (x + 9) = 50 4x = 32 x = 8. Age of the youngest child = x = 8 years. 2. Lipu is two years older than Juli who is twice as old as Sai. If the total of the ages of Lipu, Juli and Sai be 47, the how old is Juli? A)16 yr B)17yr C)19yr D)18yr Answer : Option D Explanation: Let sai's age be x years. Then, Juli's age = 2x years. Lipu's age = (2x + 2) years. (2x + 2) + 2x + x = 47 5x = 45 x = 9. Hence, Juli's age = 2x = 18 years. 3.A man is 30 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)26 yr B)25yr C)22yr D)28yr Answer : Option A Explanation: Let the son's present age be x years. Then, man's present age = (x + 30) years. (x + 30) + 2 = 2(x + 2) x + 30 = 2x + 4 x = 26. Hence, Juli's age = 2x = 18 years. 4. At present, the ratio between the ages of Lipu and Juli is 4 : 3. After 5 years, Lipu's age will be 29 years. What is the age of Juli at present ? A)26 yr B)25yr C)22yr D)28yr Answer : Option A Explanation: Let the present ages of Lipu and Juli be 4x years and 3x years respectively. Then, 4x + 5 = 29 4x = 24 x = 6. Juli's age = 3x = 18 years. 5. Raja is younger than Rani by 7 years. If their ages are in the respective ratio of 7 : 9, how old is Raja? A)26.5 yr B)25.5yr C)26yr D)24.5yr Answer : Option D Explanation: The peresent ages of Raja and Rani be 7x and 9x Raja is younger than Rani in 7 years So 9x-7x=7 2x=7 x=3.5 Raja's age= 7x= 7*3.5=24.5

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