13. What is the class mark of 30-40
Answers
Answered by
2
Answer:
Class mark
=
2
Upperlimit+Lowerlimit
=
2
30+40
=
2
70
=35
Answered by
1
Answer:
35
Step-by-step explanation:
(30+40)÷2
70÷2
35
35=class mark
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