📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      The average age of a class of 25 girls is 16 years. If 5

      new girls having average age of 10 years join the class, then the average age of the class becomes:
      A 12 years Correct Answer Incorrect Answer
      B 13.6 years Correct Answer Incorrect Answer
      C 15 years Correct Answer Incorrect Answer
      D 19 years Correct Answer Incorrect Answer

      Solution

      Total age of 25 girls = 25 × 15 = 400 years Total age of 30 girls = 400 + (5 × 10) = 400 + 50 = 450 years Therefore new average age = 450/30 = 15 years

      Practice Next
      More Average Questions

      Relevant for Exams:

      ask-question