UP Police SI · Numerical & Mental Ability
Mean and weighted average problems.
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Q1 · Average · EASY
The average age of 5 students in a class is 14 years. If the age of their teacher is included, the average age becomes 16 years. What is the age of the teacher?
Q2 · Average · MEDIUM
The average weight of 40 students in a class is 52 kg. When a new student joins the class, the average weight increases by 0.5 kg. What is the weight of the new student?
Q3 · Average · EASY
The average marks of 3 subjects are 75. If the marks in two subjects are 70 and 80, what are the marks in the third subject?
Q4 · Average · MEDIUM
The average salary of 20 employees in a company is Rs 25,000. If the salary of the manager, which is Rs 45,000, is also included, what will be the new average salary?
Q5 · Average · MEDIUM
The average of 5 consecutive odd numbers is 27. What is the largest of these numbers?