Question

(Chp.7) (15) Find out the class mark of 10 - 25 and 35 - 55 class.​

Answer 1

Answer:

$for \: class \: 10 - 25$

$= > class \: mark = \: \frac{upper \: limit \: + \: lower \: limit}{ 2}$

$= > \frac{10 + 25}{2}$

$= > \frac{35}{2}$

$= > 17.5...ans$

$for \: class \: 35 - 55$

$= > \frac{upper \: limit \: + lower \: limit}{2}$

$= > \frac{35 + 55}{2}$

$= > \frac{90}{2}$

$= > 45...ans$

Step-by-step explanation:

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