Question

How many quarters and dimes does Andrew have if he counted that he had 22 coins that amounted to $4?

Answer 1

Notice that a quarter is 15 cents more that a dime. Let us start with `22` dimes, which amounts to only $2.20. Since he is $4.00 - $2.20 = $1.80 short, he needs to replace `180 divide 15=12` dimes into quarters. Hence, Andrew has 12 quarters and 22 - 12 = 10 dimes.

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