Answer:
Black is 3.57%
Green is 96.43%
Step-by-step explanation:
Since 27 green than black
Let the black car be b
So green cars which 27 more than black means 27b
So to calculate the percentage of green we will have
27b/27b+b ×100
27b/28b ×100
Let's eliminate the b
27/28×100
2700/28
96.43%
So let's calculate for Black
b/27b+b ×100
b/28b ×100
Eliminate b
1/28 ×100
100/28
3.57%
Therefore the percentage for Black is 3.57% and for green is 96.43%
Example:

This suggests two solutions,

and

.
However, upon plugging these solutions back into the equation, you get

which checks out, but

does not because

is defined only for

(assuming you're looking for real solutions only). So, we call

an extraneous solution, and the complete solution set (over the real numbers) is

.
Answer:

Step-by-step explanation:
The measure of exterior angle is equal to the sum of opposite interior angles.
So,
Exterior angle = 43+27
Exterior angle = 70°