SOLUTION: John bought a radio for $120. He paid his bill with two dollar bills and five dollar bills. If there were 30 bills in all how many of each were there?
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Question 430866: John bought a radio for $120. He paid his bill with two dollar bills and five dollar bills. If there were 30 bills in all how many of each were there? Answer by Gogonati(855) (Show Source):
You can put this solution on YOUR website! Solution:Let x the number of $5 bills, then 30-x is the number of $2 bills
Since he spend $120 we write: , solve the equation.
5x-2x=120-60 => 3x=60 => x=20.
Answer:John bought the radio with 20, $5 bills and 30-20=10, $2 bills.
Check: 20X5+10X2=100+20=120.
Done.
