anonymous
  • anonymous
Earl has 28 coins, all dimes and quarters. How many of each does he have, if their total value is $5.20?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
d+q=5.20 .10d+.25q=5.20 sub method
anonymous
  • anonymous
wait! d+q=28 sorry
anonymous
  • anonymous
now you sub. lets do dimes. d=28-q so sub it .10(28-q)+.25q=5.20 2.80-.10q+.25q=5.20 .15q=2.40 q=16 soooo then dimes is 12

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anonymous
  • anonymous
does that make sense?
anonymous
  • anonymous
yes, thank u

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