Calculate the sale prices of each of the following discounted items.  

1. A shirt originally priced at $$30$ has been discounted $20\%$.

   Hint (a):

   Since the discount is $20\%$, that means that the shirt costs $80\%$ of the original price.
   Try making a diagram, like the one below, to help you solve this problem.

   

   Answer (a):

   $$24$

2. A sofa originally priced at $$1500$ has been discounted $30\%$.

   Hint (b):

   This problem is very similar to part (a).
   $10\%$ of $$1500$ is $$150$.

   Answer (b):

   $$1,050$

3. A loaf of bread originally priced at $\$3.49$ has been discounted $10\%$.

   Hint (c):

   This problem is very similar to parts (a) and (b).