Look at the generic rectangle below.

1. What two numbers are being multiplied using this rectangle? How can you tell?

2. Write the product as a sum of the areas and find the answer.

   Hint (a):

   Look back at problem 3-63 if you are not sure about using generic rectangles.

   More Help (a):

   We can see that $3$ is a factor of both $150$ and $6$, so we can put it on the diagram as shown.
   Then we can see that $50$ belongs at the top.

   $500$ $\ $	$20$
   $150$ $\ $	$6$

   Hint (b):

   Again, reference problem 3-63 as a guide for this problem. Remember that you are adding the smaller areas to find the total area.