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LUCKY_DIMON [66]
3 years ago
5

Jack chooses 15 downloads for $19.75, and jim chooses 40 downloads for $43.50. What is the regristration fee, and what is the co

st of each download?
Mathematics
1 answer:
Rina8888 [55]3 years ago
8 0
Registration fee  = x
cost of one download = y

x+15y=19.75
x+40y=43.50

      x+15y=19.75
  <span>  -(x+40y=43.50)
</span>         - 25y = 19.75-43.50

          -25y = -23.75
               y = 0.95

x+15y=19.75
x+15*0.95=19.75
x= 19.75 - 15*0.95
x=5.50

registration fee  = $ 5.50
cost of one download = $ 0.95
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