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Mathematics, 28.05.2021 18:50 minideeri

Monica has been saving her spare change. So far, she has saved 40 coins for a total of $6.25. Some of the coins are quarters (25 cents), and the rest are dimes (10 cents).
How many of each coin does she have? Let the number of quarters = q and the
number of dimes = d.

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Monica has been saving her spare change. So far, she has saved 40 coins for a total of $6.25. Some...
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