The average weight of a class is 40 kg. If a student with a weight of 60 kg joins the class, the new average weight becomes 42 kg.  Now, the total number of student in the class is

The average weight of a class is 40 kg. If a student with a weight of 60 kg joins the class, the new average weight becomes 42 kg.  Now, the total number of student in the class is

1). 9
2). 10
3). 11
4). 12

---

Join Telegram Group

Answer This Question
Name:
Email:
Answer :
Sum of (1+5)
Submit:

Other Questions

1. Five years ago, the average age of P and Q was 25.The average age of P,Q and R today is 25.Age of R after 5 years will be

2. Average weight of Sunil and Ravi is 45 kg. Average weight of Ravi and Pranit is 41 kg. And average weight of Sunil and Pranit is 42 kg. Then find the weight of Sunil.

3. The average of the first nine integral multiples of 3 is

4. The average of (2, 5 and 8), (13, 0 and 5) and (3, 1 and 2) is a, b and c respectively. Find the value of (7c + a × 3b)/13

5. The average of first three numbers is double of the fourth number.If the average of all the four numbers is 12, find the 4th number.

6. The mean of the data 1, 2, 10, 18, 3, 17,19 is

7. In an exam, the average was found to be 50 marks. After deducting computational errors the marks of the 100 candidates had to be changed from 90 to 60 each and the average came down to 45 marks. The total number of candidates who took the exam were

8. A library has an average of 480 visitors on Sundays and 210 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is

9. If there are four numbers such that average of A and B is 29, average of B and C is 34 and average of C and D is 50, then what will be the average of A and D?

10. A boy spent Rs. 20 to purchase toffees at Rs. 1 each. Next day, he purchased some toffees for Rs. 40 with a discount of 50 paise per toffee. What is the average price per toffee (in paise)?