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
35 - reduced
0.6 - decimal
in the like term you can add directly and make it single fraction and in unlike term you have to take LCM of denominator .
7
