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
Answer (1)
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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