Question

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

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

Answer 1

The answer is B
In the given class 90 – 120, upper class = 120,
And lower class = 90.
We know that, $classmark=\frac{Upperclass+Lowerclass}{2}$
$=\frac{120+90}{2}=\frac{210}{2}=105$