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22 February, 14:07

Out of 40 coins, 16 are dimes. Half of the remaining coins are quarters and the rest are pennies and nickels. There are 2 nickels for every penny. How many pennies are there? A. 3 B. 4 C. 9 D. 12

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  1. 22 February, 14:36
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    Answer: Option B is the correct answer.

    Step-by-step explanation:

    Let x represent the number of pennies.

    Out of 40 coins, 16 are dimes. This means that the number of coins remaining is

    40 - 16 = 24

    Half of the remaining coins are quarters. This means that the number of quarters is

    1/2 * 24 = 12 quarters

    the rest are pennies and nickels. This means that the total number of

    pennies and nickels is 12

    There are 2 nickels for every penny. This means that the number if nickels is 2x. Therefore,

    2x + x = 12

    3x = 12

    x = 12/3 = 4

    there are 4 pennies
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