the average marks of a class of 30 students is 40 and that of another class of

Sail E0 Webinar

Question

the average marks of a class of 30 students is 40 and that of another class of 50 students is 60. find the average marks of all the students?

Options:

A . 50

B . 47.5

C . 59

D . 52.5

Answer: Option D
Explanation :

Was this answer helpful ?

Next Question

Submit Solution

More Questions on This Topic :

Question 1. the average of 35 numbers is 25. if each number is multiplied by 5, find the new average?....

Question 2. a batsman makes a score of 64 runs in the 16th innings and thus increased his average by 3. find his average after the....average by 3. find his average after the 16th inning?

Question 3. the average salary of a person for the months of january, february, march and april is rs.8000 and that for the months....rs.8500. if his salary for the month of may is

Question 4. the average of 13 numbers is 60. average of the first 7 of them is 57 and that of the last 7 is 61. find the 8th numbe....of the last 7 is 61. find the 8th number?

Question 5. a batsman makes a score of 64 runs in the 16th innings and thus increased his average by 3. find his average after the....average by 3. find his average after the 16th inning?

Question 6. the average of 35 numbers is 25. if each number is multiplied by 5, find the new average?....

Question 7. the average of 35 numbers is 25. if each number is multiplied by 5, find the new average?....

Question 8. the average of 13 numbers is 60. average of the first 7 of them is 57 and that of the last 7 is 61. find the 8th numbe....of the last 7 is 61. find the 8th number?

Question 9. the average marks of a class of 30 students is 40 and that of another class of 50 students is 60. find the average mar....is 60. find the average marks of all the students?

Question 10. the average salary of a person for the months of january, february, march and april is rs.8000 and that for the months....rs.8500. if his salary for the month of may is

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Chapter 3.1 : Overview of Finance & Accounts Department Chapter 3 : Finance & Accounts SAIL E0 - GFM 2024

Chapter 2.1 : Overview Chapter 2 : Materials Management SAIL E0 - GFM 2024

Chapter 1.1 : Personnel Functions- An overview Chapter 1 : Personnel Management SAIL E0 - GFM 2024

GPOE / GPA Combined 1 Free CBT Mock Test SAIL E0 2024

CBT Mixed Test 1 GPOE/GPA SAIL E0 2024