Answer:
P(red) = 1/6
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
One bag contains black, red and green pearls in a ratio of 3:2:7.
So
[tex]\frac{3}{3+2+7} = \frac{3}{12}[/tex] of the pearls are black
[tex]\frac{2}{3+2+7} = \frac{2}{12}[/tex] of the pearls are red.
[tex]\frac{7}{3+2+7} = \frac{7}{12}[/tex] of the pearls are green.
P (red)
For each 12 pearls, 2 are red. So
P(red) = 2/12 = 1/6
