rrr57
28.07.2019 •
Mathematics
Brendas school is selling tickets to a spring musical. on the first day of ticket sales the school sold 3 senior citizen tickets and 9 child tickets for a total of $75. the school took in $67 on the second day by selling 8 senior citizen tickets and 5 child tickets. what is the price each of one senior citizen ticket and one child ticket? , need
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Ответ:
75 = 3s + 9c
(67 = 8s + 3c)-3
75 = 3s + 9c
-126 = -24s -9c Combine like terms
-51 = -21s
senior = $2.42
Plug into top equation
child = 7.53
Check with bottom equation
Ответ:
50-37.52 equals 12.48