Question

Find the class mark of the class interval 70-80​

Answer 1

Answer:

class mark = 75

Step-by-step explanation:

Class mark= lower class + upper marks by 2

=70+80/2

=150/2

=75

Answer 2

Answer:

given:

class interval 70 - 80

to find : class mark

solution:

class mark =upper limit + lower limit/2

class mark = 70 + 80 /2

=150/2

=75