SOLUTION: In a class, average of 10 students is 19.When 1 person is removed, and then the average increases by 1/2. Find out the age of the person who is removed.
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Question 234433: In a class, average of 10 students is 19.When 1 person is removed, and then the average increases by 1/2. Find out the age of the person who is removed. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! In a class, average of 10 students is 19.When 1 person is removed, and then the average increases by 1/2. Find out the age of the person who is removed.
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Average = (sum of ages/10)
19*10 = original sum of ages
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New average = (new sum of ages/9)
19.5*9 = new sum of ages
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Old sum = 190
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New sum = 19.5*9 = 175.5
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Age of the missing person = 190-175.5 = 14.5
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Cheers,
Stan H.
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