Question

How to find the upper limit for the following question.
120 - 150
Please explain it step by step.

Answer 1

Answer:

Given classes 100−120,120−140,160−180

class size = upper limit - lower limit

→100−120

class size =120−100=20

→120−140

Class size =140−120=20

→160−180

class size =180−160=20