• anonymous
Every evening jenna empties out her pockets and puts her change in a jar. at the end of the week she counts her money. one week she had 40 coins, all of them dimes and quaters. when she added them up she had a total of &7.75. how many dimes did jenna have??
  • Stacey Warren - Expert
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  • schrodinger
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  • anonymous
You can use the following system equations where: The number of dimes is \(d\), and the number of quarters is \(q\):\[\begin{array}{} &d&+&&q &=& 40\\ $0.10&d&+&$0.25&q &=&$7.75 \end{array}\]

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