There are some students in two examination halls a and b. to make the number of students equal in each hall, 10 students are sent from a to b. but if 20 students are sent from b to a, the number of students in a becomes twice the number of students in b. find the number of the two halls.

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (

i will u if u answer my question in math