Answer:
1/4
Step-by-step explanation:
The chance that he flipped heads would be 1/2. Then the chance that he flipped tails after would be 1/2. Then you would multiple 1/2 x 1/2 = 1/4
set variables
Top question
Take 150000*.15 and get 22500, Then 150000-22500=127500
Question two
Take 1/3*9000=3000
9000-(9000*1/3)