The answer is C.
It’s C because if you add the marble back to the bag you have a 4:5 chance of adding the white marble again, hence giving you another white marble in the bag to pick
I used mental math and it took a long time, but I got the answer of 2,499.
(24)(20)2= 960 the answer to the question
Answer:A -3,6
Step-by-step explanation: Substitue the answers in and they work out