Average Age Calculation
MAT 2018 · Mathematical Skills · Easy · Averages
In a group of 7 people, the average age is found to be 17 years. Two more people joined with an average age 19 years. One person left the group whose age was 25 years. What is the new average age of the group?
- A.
17.5 years
- B.
16.5 years
- C.
18 years
- D.
16 years
Answer
D
Explanation
Initial total age = . Total age after 2 people join = . Total age after 1 person leaves = . New number of people = . New average age = years.
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