From the problem, we have 2 red cars, 2 green cars and 4 blue cars.
A total of 8 cars.
The probability is the event happening divided by the total events.
Devon and Akra need to drive a red bumber car, so the event happening must be red.
The probability that Devon will drive a red bumper car is 2/8
Now we have 7 cars left with 1 red car
The probability that Akra will drive a red bumber car is 1/7
Multiply the probabilites :
In percentage :
0.036 x 100 = 3.6%
The answer is 3.6%