The total age of a group of 9 students is 171 years. The average age of another group half of the average age of first group. If there are 6 people in group, find the average age of both the groups put together.

The total age of a group of 9 students is 171 years. The average age of another group half of the average age of first group. If there are 6 people in group, find the average age of both the groups put together. Correct Answer 15.2 years

The total age of group 1 = 171 years The average age of first group: 171/9 = 19 years The average age of the second group = half of the average age of the first group. 19/2 = 9.5 years Total age of the second group: 9.5 * 6 = 57 years Total age of the 2 groups = 57 + 171 = 228 years Average age of both the groups = 228/15 = 15.2 years
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