Question : The average weight of 15 people increases by 3.2 kg when a new person comes in place of one of them weighing 52 kg. The weight of the new person is:
Option 1: 48 kg
Option 2: 96 kg
Option 3: 100 kg
Option 4: 52 kg
Correct Answer: 100 kg
Solution : The average weight of 15 people increased by 3.2 when a new person replaced a 52 kg person. Weight of new person = previous person weight + Increased weight × number of persons According to the formula, Weight of new person = 52 + 3.2 × 15 = 52 + 48 = 100 The weight of the new person is 100 kg Hence, the correct answer is 100 kg.
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Question : The average weight of 15 students in a class increases by 1.5 kg when one of the students, who weighs 40 kg, is replaced by a new student. What is the weight in kg of the new student?
Question : The average weight of 49 students is 53 kg. When a new student is admitted to the class, the average decreases by 500 g. Find the weight of the new student.
Question : The average weight of 8 students is 48 kg. If four students with an average weight of 44 kg and four with an average weight of 58 kg are also added, then find the average weight of 16 students.
Question : There are 50 students in a class with an average weight of 45 kg. When one student leaves the class, the average weight reduces by 100 g. What is the weight of the student who left the class?
Question : A person's weight was entered incorrectly as 83 kg instead of 63 kg. As a result, the average weight of a group of people increased by 500 gm. What is the total number of people in the group?
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile