
Concept explainers
To find : the number of quarters and dimes that K had.

Answer to Problem 12CYU
K had 10 quarters and 15 dimes.
Explanation of Solution
Given information: K had 25 quarters and dimes. The total value of all the coins was $4.
Calculation:
Let us suppose K had x and y number of quarters and dimes.
Since , total number of coins is 25, so
Now, total value of all the coins is $4.
Therefore,
By using equation (1), we get
Also, from equation (1), we have
Therefore, K had 10 quarters and 15 dimes.
Chapter 3 Solutions
Glencoe Algebra 2 Student Edition C2014
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