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Average and Ages Practice

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  1. Q1Average and AgesMedium
    The average weight of 13 students is 57 kg. When one student weighing 42 kg is replaced by a new student, the average increases by 3 kg. What is the weight of the new student?
  2. Q2Average and AgesMedium
    The present ages of Divya and Sneha are in the ratio 5 : 3. After 6 years the ratio will be 3 : 2. What is Divya's present age?
  3. Q3Average and AgesMedium
    Ten years ago, A was three times as old as B. Ten years from now, A will be twice as old as B. What is A's present age?
  4. Q4Average and AgesMedium
    The average weight of 18 students is 42 kg. When one student weighing 59 kg is replaced by a new student, the average increases by 1.5 kg. What is the weight of the new student?
  5. Q5Average and AgesMedium
    The present ages of Arjun and Rahul are in the ratio 5 : 4. After 8 years the ratio will be 19 : 16. What is Arjun's present age?
  6. Q6Average and AgesMedium
    The average weight of 27 students is 59 kg. When one student weighing 59 kg is replaced by a new student, the average increases by 1 kg. What is the weight of the new student?
  7. Q7Average and AgesMedium
    The average weight of 26 students is 66 kg. When one student weighing 43 kg is replaced by a new student, the average increases by 0.5 kg. What is the weight of the new student?
  8. Q8Average and AgesMedium
    The average weight of 13 students is 49 kg. When one student weighing 65 kg is replaced by a new student, the average increases by 1 kg. What is the weight of the new student?
  9. Q9Average and AgesMedium
    The present ages of Ravi and Imran are in the ratio 4 : 7. After 10 years the ratio will be 13 : 19. What is Ravi's present age?
  10. Q10Average and AgesMedium
    The average of 11 results is 50. The average of the first 6 results is 49 and the average of the last 6 results is 52. What is the 6th result?