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There are 30 students in a class. The average age of first 10 students is 12.5 years. The average age of remaining 20 students is 13.1 years. The average age (in years) of students of whole class is :


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A cricketer had a certain average of runs for his 64 innings. In his 65th innings, he is bowled out for no score on his part. This brings down his average by 2 runs. His new average of runs is :

There are 30 students in a class. The average age of first 10 students is 12.5 years. The average age of remaining 20 students is 13.1 years. The average age (in years) of students of whole class is :

The average of marks in Mathematics for 5 students was found to do 50. Later, it was discovered that in the case of one student the marks 48 were misread as 84. The correct average is :

There are 30 students in a class. The average age of first 10 students is 12.5 years. The average age of the remaining 20 students is 13.1 years. The average age (in years) of the students of the whole class is :

Averages Aptitude Questions

Arithmetic-Aptitude