A cash register contains money in bills in $1's, $5's, $10's, and $20's.
Explain the problem and make a plan to figure out the total amount of money in the drawer.
You count and find out that there are 12 $1 bills in the drawer. There are half as many $20 bills as $1's. There are 3 times as many $10 bills as $20's. There are 3 times as many $5 bills as there are $10's.
Explain the problem and make a plan to figure out the number of each other type of bill in the drawer.
How many $5's in the drawer? There are ______ $5 bills.
How many $10's are in the drawer? There are ______ $10 bills.
How many $20's are in the drawer? There are ______ $20 bills.
So how much money is in the drawer all together? There is $______ in the drawer.