📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

  • google app store apple app store
  • âś–

      Question

      Average age of a class of 37 students is 12 years.

      Average age of the class is increased by 18 months if the age of the teacher is included. Find the age of the teacher.
      A 65 years Correct Answer Incorrect Answer
      B 69 years Correct Answer Incorrect Answer
      C 70 years Correct Answer Incorrect Answer
      D 80 years Correct Answer Incorrect Answer

      Solution

      Sum of the ages of all the students in the class = 37 × 12 = 444 years Sum of the ages of the students along with teacher = 38 × 13.5 = 513 years So the age of the teacher = 513 – 444 = 69 years

      Practice Next
      ask-question