From the question;
The number of Americans who flew to Europe in 2007 = 13.3 million
= 13, 300, 000
This numbers decreased by 18.8% in 2011
Therefore
Decrease = 18.8% times 13,300,000
This gives
![\begin{gathered} (18.8)/(100)*13,300,000 \\ =0.188*13,300,000 \\ =2,500,400 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/as3hmmfjsbips0d08u7qfv0nwth8r8929a.png)
Therefore, the number decreased by 2,500,400 in 2011
Hence the number of Americans that flew to Europe in 2011
= 13,300,000 - 2,500,400
=10,799,600
Therefore, the number of Americans that flew to Europe in 2011 is 10,799,600