The stem-and-leaf plot lists the ages of people in a movie theater. How many people in the movie theater are over the age of 30?
2 answers:
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Answer:
The number of adult tickets are 57.
Step-by-step explanation:
Given,
Total number of tickets = 156
Total money = $1077.60
Solution,
Let the number of adult be x and of child be y .
So, Total number of tickets = Number of adults + Number of child
Now, according to question;
Total money =
On multiplying by 10 on both side, we get;
Now multiplying equation 1 by 53 then subtract it from equation 3, we get;
Since x is the number of adults,
Number of adults=57
Number of child = y = 156-57=99
Thus the number of adult tickets are 57.