Felicia is working on the following problem: There are 730 balls to be put into packages of 3. How
many packages can be made, and how many balls
will be left over? Here are Felicia's ideas:
One hundred packages of balls will use 300
balls. After another 100 packages, we will have
used up 600 balls. Another 30 packages will use
another 90 balls, for a total of 690 balls used.
Ten more packages brings us to 720 balls used.
Three more packages will bring us to 729 balls
used, with 1 ball left over. All together we could
make 100 + 100 + 30 + 10 + 3 = 243 pack-
ages of balls with 1 ball left over.
Write equations as in the text that correspond to
Felicia's work.