Solve the problem.
-A traffic light is red for 50 seconds, yellow for 5 seconds, and green for 40 seconds. Find the probability: P(the light is not yellow)
A) $\frac { 18 } { 19 }$
B) $\frac { 1 } { 14 }$
C) $\frac { 94 } { 95 }$
D) $\frac { 9 } { 14 }$

Question

Quizplus · Accepted Answer

The total cycle time is 50 (red) + 5 (yellow) + 40 (green) = 95 seconds. The light is not yellow for 50 (red) + 40 (green) = 90 seconds. So, P(not yellow) = $\frac{90}{95} = \frac{18}{19}$.

Solve the Problem 1819\frac { 18 } { 19 }1918​ B) 114\frac { 1 } { 14 }141​

Solve the Problem $\frac { 18 } { 19 }$ B) $\frac { 1 } { 14 }$