Question

The average test score of a class 7A of
20 students is 24 and the class 7B of 21
students has the average score as 21.
The school has only two sections of class 7.
What is the average test score of class 7?​

Answer 1

Answer:

Step-by-step explanation:

==== 7A AVERAGE TEST SCORE OF 20 STU = 24

     7A TOTAL SCORE = 24*20

                                     = 480

 ===  7B AVERAGE TEST SCORE OF 21 STU = 21

     7B TOTAL SCORE = 21*21

                                     = 441

       AVERAGE OF 7A AND 7B IS == (480+441)/2

                                                === 921/2