Answer:
35/100
Step-by-step explanation:
P(green or black) = 3/20 + 4/20 = 7/20
7/20 = 35/100
35 times
all of them added together is 20 7/20 7x5=35 because 20 goes into 100 5 times
50 people
100-70 is 30. 30-20 is 10. 60-10 is 50.
4.7
