How to solve these coins.
The value of the coins are stored. nickels old, dimes, quarters and pennies worth of pennies. $ 8 there was seven times more than three quarters were very 16 dimes and nickels at least twice as many quarters. If the value of the entire collection. $ 38.40 How many of each type of coin?
You know $ 8 in pennies pennies 800 leaves $ 30.40 or B For 3040 dollars other if d. B = number of dimes worth 10d, 3d 7 = Number + of value. 25 (3D + 7) b and 2 (3D + 7) – 16 = number of nickels = 6d + 14 – 16 = 6d – 2 value. 5 (6d – 2) b, so 10d + 25 (3D + 7) + 5 (6d – 2) = 3040 10d + 75d + 175 + 30D – 10 = 3040 115d + 165. = 3040 115d = 2875 d = 2875 ÷ 115, so see what used To answer questions.
seven coins
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