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hodyreva [135]
2 years ago
12

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?
Mathematics
2 answers:
balandron [24]2 years ago
8 0

Answer:

The correct answer is 9 roses and 3 lilies

NARA [144]2 years ago
5 0

To solve this problem you must apply the proccedure shown below:

1. Let's call: x the number of roses and y the number of lilies.

2. You must make a system of equation based on the information given in the problem above:

1) 1.75x+2y=21.75\\ 2) x+y=12

3. Use the method of substitution. First, solve for x in the second equation, then substitute it into the first equation, and then solve for y:

x=12-y\\ 1.75(12-y)+2y=21.75\\ y=3

4. Now, substitute y=3 into the second equation:

x+3=12\\ x=9

Therefore, the answer is: 9 roses and 3 lilies.

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