Bill has 38 bills. He he has ten dollar bills and five dollar bills only. If he has $260, how many five dollar bills does he have?

20 five dollar bills

Step-by-step explanation:

let x be the 5 dollar bills and y the 10 dollar bills,

5x+10y=260 --> divide both sides by 5 --> x+2y=52

x+y=36

x=36-y

substitute x into the first equation,

(36-y)+2y=52

36-y+2y=52

36+y=52

y=52-36

y=16

substitute y into the second equation,

x=36-(16)

x=20

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

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