๐Ÿ“ข Too many exams? Donโ€™t know which one suits you best? Book Your Free Expert ๐Ÿ‘‰ call Now!

  • google app store apple app store
  • โœ–

      Question

      The average age of 25 children and their teacher's age

      are 20 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
      A 45 years Correct Answer Incorrect Answer
      B 42 years Correct Answer Incorrect Answer
      C 48 years Correct Answer Incorrect Answer
      D 52 years Correct Answer Incorrect Answer

      Solution

      Sum of the age of total children and teacher = 26 ร— 20 = 520 Sum of the age of children after excluding = 25 ร— 19 = 475 Teacherโ€™s age = 520 โ€“ 475 = 45 years

      Practice Next
      ask-question