a theater holds 2,680 seats. the lower level has 100 less than 2 times as many seats as the upper level. the middle level has 80
more than 3 times as many seats as the upper leveel. how many seats are in the middle level?
2 answers:
Answer:
b
Step-by-step explanation:
i took it on ed 2020 and got it correct
x + y + z = 2680
<span>x = 2z - 100 </span>
<span>y = 3z + 80 </span>
<span>x + y = 5z - 20 </span>
<span>6z - 20 = 2680 </span>
<span>z = 450 </span>
<span>y = 1430 </span>
<span>Solution: </span>
<span>x = 800, y = 1430, z = 450 </span>
<span>The middle level has 1430 seats. </span>
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