The class width is 5, the lower-class limit is 10, what is the upper-class limit of the same class?
15
The class width is given as 5, and 10 is the lower limit.
Let upper limit be x.
∵ class width = upper limit - lower limit
⇒ 5 = x - 10
⇒ x = 15
∴ upper limit is 15.