SOLUTION: In a class of 25 students the average age is 20 years. Two students, age 25 and 35 drop the course. What is the average age?

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Question 766038: In a class of 25 students the average age is 20 years. Two students, age 25 and 35 drop the course. What is the average age?
Found 2 solutions by solver91311, reviewermath:
Answer by solver91311(24713) About Me  (Show Source):
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If the average age of 25 students is 20, then the sum of the 25 students ages must be 25 times 20. Then, when the two people drop the course, that sum is reduced by the ages of the two who dropped and the new average is the new sum divided by 23.

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Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Q:
In a class of 25 students the average age is 20 years. Two students, age 25 and 35 drop the course. What is the average age?
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A:
new average = %2820%2825%29+-+%2825+%2B+35%29%29%2F%2825+-+2%29 = highlight%2819.13%29