Question 104380
lee withdre $200 from his account. he asked to bank clerk to give the money to him only in $5 and $10.  if he received twoo more $10 than $5s how many bills did he receive in all...  i know that he got 14 tens and 12 5s  but how do i write this as a "let x =" problem and answer
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Let "x" be the number of $5 bills; value of this is 5x dollars
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Then "x+2" is the number of 10$ bills: value of these is 10(x+2)=10x+20 dollars
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EQUATION:
value + value = $200
5x + 10x+20 = 200
15x = 180
x = 12 (# of $5 bills)
x+2 = 14 (# of $10 bills)
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Cheers,
Stan H.