Let the event 
The the probability of the events


The conditional probability

Answer:
$22.68
Step-by-step explanation:
Answer:

Step-by-step explanation:
Total number of tickets sold = 3388
Total number of coach tickets = 3069
Total number of first-class tickets = Total number of tickets sold - Total number of coach tickets
= 3388 - 3069
= 319

Ratio of the number of first-class tickets to the total number of tickets = 319:3388
20% of 15 is 12$, and tax is 5% so it comes out to 12.60$
The answer is B
The total amount is 0.75 inches or 3/4 inches.