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Mathematics 24 Online
OpenStudy (abbycross167):

can someone please help me answer this question? I will fan and give a medal!! I could really use some help... Question~ Solve the following problem using the substitution method. CHECK your solutions by substituting your coordinates into BOTH equations and simplifying. 9. In one week a music store sold 7 violins for a total of $1600. Two different types of violins were sold. One type cost $200 and the other type cost $300. How many of each type of violin did the store sell?

OpenStudy (f_jayyy):

4 of the 300$ and 2 of the 200$

OpenStudy (abbycross167):

I don't understand... could you please explain?

OpenStudy (gm100299):

4 violins were sold at $300 = $1200 2 were sold at $200 = $400 1200 + 400 = $1600

OpenStudy (f_jayyy):

yup

OpenStudy (abbycross167):

ooo ok thank you!! @GM100299

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