IBPS RRB · Quantitative Aptitude
Average
Mean, weighted average, average speed, age-based problems
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Take a full mock →Q1 · Average · EASY
The average age of 30 students in a class is 15 years. If the teacher's age is included, the average becomes 16 years. What is the teacher's age?
Q2 · Average · EASY
The average age of 30 students in a class is 15 years. If the teacher's age is included, the average increases by 1 year. What is the age of the teacher?
Q3 · Average · MEDIUM
The average age of 5 members of a family is 24 years. If the age of the youngest member is 8 years, what was the average age of the family at the time of birth of the youngest member?
Q4 · Average · EASY
The average of five numbers is 48. If one number is excluded, the average becomes 45. What is the excluded number?
Q5 · Average · EASY
The average age of 30 students in a class is 15 years. If the teacher's age is included, the average age becomes 16 years. What is the age of the teacher?