Problems on Ages - General QuestionsProblems on Ages - Data Sufficiency 1Problems on Ages - Data Sufficiency 2Problems on Ages - Data Sufficiency 3
6.The difference between the ages of two persons is 10 years. Fifteen years ago, the elder one was twice as old as the younger one. The present age of the elder person is : A) 25 years B) 35 years C) 45 years D) 55 years View Answer Report DiscussAnswer: Option BExplanation:Let their ages be x years and (x+10) years respectively Then (x+10)-15 = 2(x-15)x-5=2x-30x=25Present age of the elder person = (x+10) =35 years.
7.The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child ? A) 4 years B) 8 years C) 10 years D) None of these View Answer Report DiscussAnswer: Option AExplanation:Let the ages of the children be x,(x+3),(x+9) and (x+12) yearsThen x+(x+3)+(x+9)+(x+12) = 50 5x = 20 x = 4Age of the youngest child x=4 years
8.The total age of A and B is 12 years more than the total age of B and C. C is how many years younger than A ? A) 12 B) 24 C) C is elder than A D) Data inadequate E) None of these View Answer Report DiscussAnswer: Option AExplanation:(A+B) - (B+C) = 12 A-C = 12
9.The age of father 10 years ago was thrice the age of his son. Ten years hence, father's age will be twice that of his son. The ratio of their present ages is : A) 5:2 B) 7 : 3 C) 9 : 2 D) 13 : 4 View Answer Report DiscussAnswer: Option BExplanation:Let the ages of the father and the son 10 years ago be 3x and x years respectively.Then (3x+10)+10 = 2[(x+10)+10]3x+20=2x+40x=20Required ratio = (3x+10) : (x+10) =70 : 30 = 7 : 3
10.A person's, present age is two-fifth of the age of his mother. After 8 years, he will one-half of the aere of his mother. How old is the mother at Dresent ? A) 32 years B) 36 years C) 40 years D) 48 years View Answer Report DiscussAnswer: Option CExplanation:Let the mother's present age be x years .Then the person's present age = $\frac{2}{5}x$$\frac{2}{5}x+8=\frac{1}{2}(x+8)=> 2(2x+40)=5(x+8) => x=40$
Problems on Ages - General QuestionsProblems on Ages - Data Sufficiency 1Problems on Ages - Data Sufficiency 2Problems on Ages - Data Sufficiency 3