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vanbenit7
15.07.2019 •
Mathematics
Matthew bought flowers for his mom. he bought 12 flowers that were a combination of roses and lilies. the roses cost $1.75 each and the lilies cost $2.00 each. he spent $21.75. how many of each flower did he buy?
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Ответ:
To solve this problem you must apply the proccedure shown below:
1. Let's call:
the number of roses and
the number of lilies.
2. You must make a system of equation based on the information given in the problem above:
3. Use the method of substitution. First, solve for
in the second equation, then substitute it into the first equation, and then solve for
:
4. Now, substitute
into the second equation:
Therefore, the answer is:
roses and
lilies.
Ответ: