If each color appears with the same probability, then there is a 1/5 chance to pick any color.
Since picking orange and picking red are mutually exclusive (if you pick orange you can't also pick red), then P(orange or red) is just the sum of their two probabilities.
1/5 + 1/5 = 2/5 or 0.4
4/5 and 40/50 are both equivalent
The question gives the relationship to be
We will interpolate to solve the question.
First Question: 147 mi
Cross multiplying,
7% in decimal form is 0.07