Multiple choice

In a workshop of teachers, there were 20 males and 30 females. The average age of males is 35 years and that of females is 25 years. The average age of both of them together is

  1. 30

  2. 29

  3. 28

  4. 31
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total age = (20 * 35) + (30 * 25) = 700 + 750 = 1450. Total people = 50. Average = 1450 / 50 = 29.

AI explanation

The total age of the 20 males is 20 multiplied by 35, which equals 700 years. The total age of the 30 females is 30 multiplied by 25, which equals 750 years. The combined total age for all 50 teachers is 1450 years, and dividing this by 50 yields an average age of 29 years.

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