Question

find the class mark of 80-90

Answer 1

Hey mate!

Here is your answer > >

Class mark=(Upper limit+Lower limit)/2

=(90+80)/2

=170/2

=85

Hope it helps!

Thankyou ☆ ☆

Answer 2

Class mark = (Upper class limit + Lower class limit) / 2

= (90 + 80) / 2
= 170 / 2
= 85