Question

find the class mark of the intervals 20-30​

Answer 1

Answer:

25

Step-by-step explanation:

Class mark of the intervals 20 - 30. That is:

Upper Limit + Lower Limit divided by two

Upper Limit: 30

Lower Limit: 20

The class mark of interval 20 - 30 is:

30 + 20 / 2

= 50/2

= 25

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Answer 2

$\huge\mathfrak{answer}$

25

$\huge\mathfrak\red{solutin}$

$class \: mark = \frac{upper \: limit + lower \: limit}{2} \\ = \frac{20 + 30}{2} \\ = \frac{50}{2} \\ = 25$

$\huge\mathfrak{hope \: it \: helps \: uhh}$