Alex has a job delivering newspapers. He puts $20\%$ of his earnings each week into his college savings account. Each week he puts $\$16$ into the account.  

1. Draw a diagram to represent this situation. How much money does Alex earn each week?

   Hint (a):

   

   $\$16$ is $20\%$ of what?

   More Help (a):

   $\frac{20}{100}=\frac{16}{\textit{x}}$

   Answer (a):

   $\$80$

2. Alex spends $10\%$ of his earnings on snacks each week. How much does he spend?

   Hint (b):

   Find $10\%$ of the answer from part (a).

   More (b):

   $0.10(80)$

   Answer (b):

   $\$8$

3. When Alex has worked for one year, he will get a raise that is equal to $15\%$ of his current earnings. How much more money will he earn each week?

   Hint (c):

   Find $15\%$ of earnings per week, the answer from part (a).