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Question
Find the class marks of the classes 15 – 35 and 45 – 60.
Sum
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Solution
Class mark of 15 – 35
= `(15 + 35)/2`
= `50/2`
= 25
And class mark of 45 – 60
= `(45 + 60)/2`
= `105/2`
= 52.5
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