Question

Find the class marks of classes 15-35 and 20-40?

Answer 1

Answer:

-20 and -20

Step-by-step explanation:

hope the answer is helpful

Answer 2

class mark of class 15-35:

(15+35)/2= 50/2 =25

class mark of class 20-40:

(20+40)/2= 60/2 =30