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Calvin has a total of 60 pieces of $5 and $10 notes. After using 1/4 of his $5 notes and 4 $10-notes to buy a bag, he has an equal number of $5 and $10 notes left. How much money does he have at first?

 May 11, 2021
 #1
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x = 5 dollar notes      (60 -x ) = 10 dollar notes

 

then 

 

x - 1/4 x   =  (60-x) -4     Solve for x

3/4x = 56-x

1 3/4x = 60

x = 5 dollar notes = 34            the reaminder are 10 dollar notes   26

      value  :         5 * 34      +        26 * 10 = ______________ dollars initially

 May 11, 2021
 #2
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Did u do ur calculations wrong?

Guest May 11, 2021

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