In a classroom, the average age of students is 20. If one new student of age 25 joins, what will be the new average if the total number of students is now 6?
Category: Math · Difficulty: expert
Hint: Calculate the total age before and after the new student joins.
Answer
20.5
Explanation
Total age before = 20*5 = 100; new total = 100 + 25 = 125; new average = 125/6 = 20.5.
This is a expert math riddle — one of the harder riddles here. The answer is 20.5.
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