Question

Find the class marks of classes 10 – 25 and 35 – 55.

Answer 1

Class mark =`("Upper Limit + Lower limit")/2`

∴ Class mark of 10 – 25 =`(10+25)/2`
                                   = 17.5
And class mark of 35 – 55 =`(35+55)/2`

                                       = 45