Lorie has 2 pieces of $100 bills. He requested to change one piece of the $100 bills into $50 bills. Half of the remaining $100 bill is changed to $10 bills while the rest is changed to $5 bills. How many pieces of bills will she have?
Use reasoning to answer the following question.
17
There will be $100 / $50 = 2 pieces of $50 when $100 is changed to $50 bills.

Half of $100 is $100 / 2 = $50.

So there will be $50 / $10 = 5 pieces of $10 when $50 is changed to $10 bills.

The remaining $50 will be changed to $5 bills so there will be $50 / $5 = 10 pieces of $5 bills.

So in total, Lorie will have 2 $50 bills + 5 $10 bills + 10 $5 bills = 17 pieces of bills.

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The answer is 17