Mean/average calculation

Questions (2)

The average of 5 numbers is 8.5. Four of the numbers are 9.2, 3.4, 6.5,and 7.4. What is the fifth number?
1. 3 answers
2. asked anonymously
3. 24 views
average age of 20 men is 50yr.5 new men,whose average age is 40yr,join them.find average age of all men?
1. 1 answer
2. asked by Anonymous
3. 454 views

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