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Dovator [93]
3 years ago
14

Mrs. Hernandez bought 18 pens for her class. Highlighters cost $3 each, and gel pens cost $2.50 each. She spent a total of $50.

Use a system of equations to find the number of highlighters and gel pens Mrs. Hernandez bought.

Mathematics
2 answers:
alisha [4.7K]3 years ago
6 0

Answer:

10\ highlighters\\8\ gel\ pens

Step-by-step explanation:

Let

x------> the number of highlighters

y-----> the number of gel pens

we know that

x+y=18 ------> equation A

3x+2.5y=50 ------> equation B  

The intersection point both graphs is the solution of the system of equations

using a graphing tool

The intersection point is (10,8)

see the attached figure

therefore

x=10\ highlighters\\y=8\ gel\ pens

Juliette [100K]3 years ago
5 0
There are 9 highlighters and  8 gel pens 
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