7 pupils of average age 12 years leave a class of 25 pupils of average age 14 years. If 6 new pupils of average age 11years join the class, what is the aver...

Question 1 Report

7 pupils of average age 12 years leave a class of 25 pupils of average age 14 years. If 6 new pupils of average age 11years join the class, what is the average age of the pupils now in the class?

13years

12 years 7\(\frac{1}{2}\) months

13 years 5 months

13 years 10 months

11 years

Modular Arithmetic

Lengths And Perimeters

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