• Call Us : 03082533000 (WhatsApp)
  • Email Us : TestPointpk.com@gmail.com
Testpoint Whatsapp group Testpoint Whatsapp group
Sticky Note
The average age of 24 boys and a teacher is 15. When the teacher's age is excluded, the average decreases by 1. What is the age of the teacher?
  1. 39 years
  2. 41 years
  3. 40 years
  4. 38 years
Explanation
  • Total age of 24 boys and one teacher = 25 × 15 = 375 years
  • Average age of 24 boys = 15 − 1 = 14 years
  • Total age of 24 boys = 24 × 14 = 336 years
  • Teacher's age = 375 − 336 = 39 years

    • Related MCQs

    The average of 10 numbers was calculated as 48. It was later discovered that while calculating the average, one number, 82, was incorrectly entered as 28. What is the correct average of these numbers?
    1. 42.6
    2. 48.5
    3. 53.4
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    The average of 10 students is 80. The average becomes 85 after adding 5 more students. What is the total marks of the 5 new students?
    1. 425
    2. 475
    3. 500
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    The mean of six numbers is 18. If another number 25 is added to these six numbers, what will be the new mean?
    1. 19
    2. 18
    3. 17
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    If the ages of 3 persons are 17, 16, and 12, and another person is added making the average age 20, what is the age of the new person?
    1. 40
    2. 30
    3. 35
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    What is the Arithmetic Mean of the numbers 10, 20, 30, 40, and 50?
    1. 30
    2. 25
    3. 35
    4. None of these
    اس سوال کو وضاحت کے ساتھ پڑھیں
    Test Point Whatsapp Channel

    All Rights Reserved © TestPointpk.com