A combustion system has two burners. each with its own fuel inlet with its own shut-off valve. The probability that a valve will not work in an emergency is 0.07. Both valves must work to stop fuel flow. What is the probability that the valves will fail to stop fuel in an emergency? 3.0.172 b.0-140 c. 0.135 110.005 .A burner has one fuel inlet line with two shut-off valves in series. Each valve has a probability of not working of 0.07. As long as either valve works, fuel flow stops. What is the probability the valves will fail stop fuel in an emergency? 3.0.172 b.0.140 c. 0.135 v.0.005