c+s+a = 170
5c+6s+8.50a = 970
c = 2s
I expect you can take it from there, right?
And why specify that student tickets are "all day"? Are the others restricted in some way?
1) Last Tuesday, Galaxy Cinemas sold a total of 170 movie tickets. Tickets can be bought in one of 3 ways: a child admission costs $5, student admission cost $6 all day, and regular admissions are $8.50. Proceeds totalled $970. The number of child tickets sold was double that of student tickets.
A) write a system of equations that can be used to find the number of each type of tickets sold. From the augmented matrix and find A^-1.
B) use the inverse matrix method to solve the system of equations.
2 answers
Hi there steve....thanks for the clue...i will work on this & get back. All i certainly have no idea if theres any restriction: referring to all day...cheers...!
2 answers