Question

the class-mark of the class 130-150is
a)130 b)135 c) 140 d)145
please explain me how it's answer is 135​

Answer 1

Answer:

Class mark=lower limit+upper limit/2

=130+150/2

=140

Hence, the correct answer is option c)140.

Hope it helps you.

Answer 2

Answer:

135

Step-by-step explanation:

Formula to calculate the class mark, = 1/2 [ Upper class limit + lower class limit]

Upper class = 150

Lower class = 130

So, we get,

1/2[150+130] =280/2

= 140