SOLUTION: Kerry asked the bank teller to cash a $390 check using $20 bills and $50 bills. If the teller gave her a total of 15 bills, how many of each type of bill did she receive?
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Question 728450: Kerry asked the bank teller to cash a $390 check using $20 bills and $50 bills. If the teller gave her a total of 15 bills, how many of each type of bill did she receive?
You can put this solution on YOUR website! t+f=15,
20t+50f=390
trail and error method
there have to be at least 2 20's and one 50 to make the 90
that's three bills
we need 12 more
we can't have just 2 fifty's so try 3 50's
3 50's would mean 12 20's
150 and 240 work
