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xenesis98

  • one year ago

Every evening Jenna empties her pockets and puts her change in a jar. At the end of the week she counts her money. One week she had 50 coins, all of them dimes, and quarters. When she added them up, she had a total of $10.25. How many qurarters did jenna have

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  1. misty1212
    • one year ago
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    HI!!

  2. misty1212
    • one year ago
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    we need a variable for say the number of quarters what do you pick?

  3. xenesis98
    • one year ago
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    q

  4. misty1212
    • one year ago
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    ok good then if \(q\) is the number of quarters, they will be worth \(25q\) cents total right?

  5. xenesis98
    • one year ago
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    yea

  6. misty1212
    • one year ago
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    and if there are \(q\) quarters, since the total is \(50\) coins, the number of dimes must be \(50-q\)

  7. misty1212
    • one year ago
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    each dime is 10 cents, so the total amount of money is \[25q+10(50-q)\]

  8. misty1212
    • one year ago
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    you are told that the total (in cents) is 1025 solve \[25q+10(50-q)=1025\] for \(q\)

  9. misty1212
    • one year ago
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    you know how to do that?

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