Question

find the class mark of 10-25and 35-55

Answer 1

Class mark=(upper class limit -lower

class limit) /2

=(25-10)2

=15/2

=7.5

Similarly for 35 to 55 answer is 10

Answer 2

HLO MATE HERE IS YOUR ANSWER.....

CLASS MARK = UPPER CLASS - LOWER CLASS
_________________________
2

= 25 - 10/ 2
= 15/2
=7.5