Question

4) What is the class mark of class 20-30?
a) 25
b) 35
c) 60
d) 30​

Answer 1

Answer:

hi friends

Step-by-step explanation:

classmark = lower limit + upper limit /2

= 20+30/2

=25

so option a) 25 is the correct answer

hope this answer is helpful

thank u

Answer 2

Answer:

25

Step-by-step explanation:

(Lower Class + Upper Class) / 2