the average marks score of all the girls in a class of 42 students is13 years. the average age of all the boys as well as the average age of 23 of the boys of fhe same class is 16 years. which of the following could be the average age of the students in the class in years

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the average marks score of all the girls in a class of 42 students is13 years. the average age of all the boys as well as the average age of 23 of the boys of fhe same class is 16 years. which of the following could be the average age of the students in the class in years

Simran 16th Dec, 2019

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SAKSHI KULSHRESHTHA 16th Dec, 2019

Average age of 23 boys = 16 years

Sum of age of all boys = 23x16 = 368

Number of students = 42

Number of girls = 42-23 = 19

Average age of 19 girls = 13

Sum of age of all girls = 247

Total sum of ages = 368+247 = 615

Average = Sum of ages/ Number of students = 615/42 = 14.64 years

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