Question

It was reported that about 80% of airline tickets-nearly $65 billion worth last year are issued over the internet. What were the total sales of airline tickets last year? Round to the nearest billion

Answer 1

Answer:

The answer is nearly $81 billion.

Step-by-step explanation:

• If we know that 80% of airline tickets worth $65 billion, then $65=80\%\plus{Total_{tickets}}=0.8\plus{Total_{tickets}}$.
• Then,to know how much billion dollars worth the total tickets, we just have to clear out $Total_{tickets}$ of the equation, by dividing both sides by 0.8, which yields $\frac{65}{0.8}=Total_{tickets}=81.25$