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saveliy_v [14]
3 years ago
11

at southside middle school, 30% of the students play and instrument. there are 310 students. how many students play an instrumen

t?
Mathematics
1 answer:
alina1380 [7]3 years ago
8 0

Answer:93 students play a musical instrument

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60 student tickets and 40 adult tickets were sold

Step-by-step explanation:

Let s represent student tickets and a adult tickets, then the system of equations can be written as

s - a = 20 →(1)

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Multiply (1) by 4 and add to (2) to eliminate a

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Add (2) and (3) term by term

6s = 360 ( divide both sides by 6 )

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60 - a = 20 ( subtract 60 from both sides )

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