Question

Students at a high school were polled regarding whether or not they would like to change the vending options at the school. Use the tree diagram to determine how many students responded “yes”.
A. 250
B. 550
C.750
D.450

Answer 1

So if in the upper (400), 100 of them said no then 300 upper said yes. Add 100 and the 450 that said from the lower to get 550 as your answer.