Forty percent of the students were able to
type at which speed interval?

Answer:
Below.
Step-by-step explanation:
So let's do some math.
5+10+14+20(Number of people in the class.)
=49.
40 percent of 49= to 19.6 a student cant be half of a student.
So?
Round up to 20.
Forty percent of the students were able to type at 45-59 wpms.