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Combined average

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2 Answers

Your question has a mistake.

18/100 = 9/50

Therefore, if you add 9/50 + 5/50 it gives 14/50(not 13/50). This is the same as 28%.

This is the sum of the number and the sum of %. Not average.

Average is (9/50 + 5/50 )/2 = 7/50 = 14%.

 

 

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