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The average age of 14 girls and their teacher’s age is 15 years. If the teacher’s age is excluded, the average reduces by 1. What is the teacher’s age?
The average age of 24 students in a class is 10. If the teacher’s age is included, the average increase by one . The age of the teacher is ?
The average age of 3 friends is 23 years. Even if the age of 4th friend is added, the average age remains the same. Then the age of the fourth friend is :
The average age of 30 students is 15 years. If the teacher’s age is also included then the average age increases by 1 year. The age of the teacher is
The average age of 5 children born at an interval of every 3 years is 50 years. What is the age of the youngest child?
The average age of 7 member of Patels family is 25 year. The average age of the same family 3 year ago was
The average age of 8 men is increased by years when two of them whose ages are 21 years and 23 years are replaced by two new men. The average age of the two new men is
The average age of 8 persons is increased by 2 years, when one of them, whose age is 24 years is replaced by a new person. The age of the new person is
The average age of a class is 15.8 year. The average age of the boys in the class is 16.4 year and that of the girls is 15.4 year. What is the ratio of boys to girls in the class?
The average age of a class was 12. It rose to 13 when the age of the class teacher who is 37 years old is also included. How many students are there in the class?