Answer: 2 .5 questions
Explanation:
Given : Jill can answer 50 math questions every 20 minutes
To find the number of questions Jill can answer in one minute , we need to divide 50 by 20 , we get
The number of questions she complete in one minute =

i.e. The number of questions she complete in one minute =

So she complete 2 and a half questions per minute.