You download 25 songs for your MP3 player. Some of the songs cost $ 0.90 each and some cost $ 1.50 each. If the  total cost is $ 27.30, how many of each kind did you buy?

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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You download 25 songs for your MP3 player. Some of the songs cost $ 0.90 each and some cost $ 1.50 each. If the 
total cost is $ 27.30, how many of each kind did you buy? Fill in the table and use the “cheating” method.

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how did you get 1.5x + 1.5y = 37.5?

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