Question

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

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

Answer 1

In the given class 90 – 120,
upper class = 120 and lower class = 90

We know that,

$\text{class mark}=\frac{\text{Upper class + Lower class}}{2}$

$=\frac{120+90}{2}=\frac{210}{2}=105$