Question
David has $13. Ben has $4r more than David. Ryan has $2r less than Ben.
  1. Find the amount of money that Ryan has in terms of r.
  2. Find the total amount of money that the three boys have in terms of r.
  3. If r = 7, how much does Ryan have?
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(b)

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(c)

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David has $13. Ben has $4r more than David. Ryan has $2r less than Ben.
  1. Find the amount of money that Ryan has in terms of r.
  2. Find the total amount of money that the three boys have in terms of r.
  3. If r = 7, how much does Ryan have?