The class mark of class $90 - 120$ is

$90$

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$105$

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$115$

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$120$

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Solution

The correct option is B
$105$

Find the class mark:
We know that,
$c l a s s m a r k = \frac{l o w e r l i m i t + u p p e r l i m i t}{2}$
Then,Class mark $= \frac{120 + 90}{2}$
We get,Class mark $= \frac{210}{2}$
Class mark $= 105$
Therefore, the class mark of $90 - 120$ is $105$

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Similar questions

Question 1
The class mark of class 90 - 120 is:

A) 90
B) 105
C) 115
D) 120

Choose the correct answer in each of the following questions:
The class mark of the class 100-120 is
(a) 100
(b) 110
(c) 115
(d) 120

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