The average age of the boys in a class of 20 boys is 15.6 years. What will be the average age if 5 new boys come whose average age is 15.4 years?
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Average of 20 boys = 15.6
Average of 5 new boys = 15.4
New average of 25 boys = (15.6 * 20 + 15.4*5)/25 = 15.56 years
Average of 5 new boys = 15.4
New average of 25 boys = (15.6 * 20 + 15.4*5)/25 = 15.56 years
Dharmenda:
Wrong answer!
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0
15.56 is the right answer
Wrong answer
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