Hi! Let's divide 4000 by 1000 to see what .1% would be: $4. Now we multiply 4 by 36 to get 3.6% of 4000: $ 144 Add 4000 and 144 together:40144. hope this helps!
You will have a better chance of winning because your chance before you opened the first door was 1/3 (since there was 3 doors) but now, you have 2 doors left, so it is a 50% chance that you will win.
