At a flight-training academy, each pilot is given an emergency condition in a simulator during testing (the probabilities are shown in the table). In the current class, 25 trainees failed the test and 115 passed. How many trainees were tested in the most common scenario?

low-fuel landing

25%

instrument failure

15%

bad weather

5%

failed landing gear

15%

engine failure

20%

autopilot failure

15%

normal conditions

5%

Question

At a flight-training academy, each pilot is given an emergency condition in a simulator during testing (the probabilities are shown in the table). In the current class, 25 trainees failed the test and 115 passed. How many trainees were tested in the most common scenario?

low-fuel landing

25%

instrument failure

15%

bad weather

5%

failed landing gear

15%

engine failure

20%

autopilot failure

15%

normal conditions

5%

anonymous · Answer

A. 25 B.35 C. 15 D.10

kropot72 · Answer

Which is the most common scenario?

anonymous · Answer

im thinking its the low fuel landing

kropot72 · Answer

Correct! So the number of trainees that were tested in the most common scenario is given by:
$$total\ number\ of\ trainees\ \times\ \frac{25}{100}=you\ can\ calculate$$