The average age of a group of 32 women is 60 years and that of another group of 40 men is 33 years. The average age of the two groups mixed together is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e 45 years.
Total age of women = 32 × 60 = 1920 years
Total age of men = 40 × 33 = 1320 years
Total number of people = 32 + 40 = 72
Total age = 1920 + 1320 = 3240 years
Average age = 3240/72 = 45 years