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Haley and Nicole stopped at the school bookstore for extra supplies. Haley
bought 8 pencils and 3 folders and spent $10.39. Nicole bought 5 pencils and 4
folders and spent $10.51. How much does a folder cost? (Remember, the answer
is money.)

Respuesta :

Answer:

Step-by-step explanation:

8p+3f=10.39

5p+4f=10.51

subtract

3p-f=-0.12

f=3p+0.12

8p+3(3p+0.12)=10.39

17p=10.39-0.36

17p=10.03

p=10.03/17=0.59

f=3×0.59+0.12=1.77+0.12=1.89 $

or 40 p+15f-40p-32f=51.95-84.08

-17f=-32.13

f=1.89 $

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