Answer:
(C) 40
Step-by-step explanation:
Out of the 12 spaces, 3 of them are labeled "5". Therefore, there is a 3/12 which is 1/4 chance of the spinner landing on a "5". When there are 150 spins, about 1/4 of them will land on "5" which is 37.5. The answer closest to 37.5 is (C) 40.
Hope this helps :)
