sleimanabir
24.02.2020 •
Mathematics
Chloe charged for admission to her play on three different nights. Each night, a different number of people were in attendance, but remarkably, Chloe collected $541 each night. If the admission charges for each child and each adult were $9 and $17, respectively, how many people in total came to the three showing
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Ответ:
9514 1404 393
15 short answer (3 points)55 multiple choice (1 point)Step-by-step explanation:
Your system of equations will be ...
x + y = 70 . . . . . . . there are 70 total questions
x + 3y = 100 . . . . . there are 100 total points
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We can use the first equation to write an expression for x that can be substituted into the second.
x = 70 -y
(70 -y) +3y = 100
70 +2y = 100 . . . . . . collect terms
2y = 30 . . . . . . . . . . subtract 70
y = 15 . . . . . . . . . . . divide by 2
x = 70 -15 = 55
The test has 15 short answer questions and 55 multiple-choice.