SOLUTION: At an audio store, stereos have 2 speakers and home-theater systems have 5 speakers.There are 30 sound systems with a total of 99 speakers. How many systems are stereo systems and
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Question 1157271: At an audio store, stereos have 2 speakers and home-theater systems have 5 speakers.There are 30 sound systems with a total of 99 speakers. How many systems are stereo systems and how many are home-theater systems?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
x are stereos
30-x are ht
2x+5(30-x)=99
2x+150-5x=99
-3x=-51
x=17 of stereos (34)
30-x=13 of ht (65)
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