Question

class mark of 38-40 is ...​

Answer 1

Answer:

Class mark = lower limit + upper limit /2

38+40/2

= 78/2

= 39

Step-by-step explanation:

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Answer 2

Answer:

class mark = upper limit +lower limit /2

U.L=38

L.L=40

38+40/2

=78/2

=39 is the class mark