Destinationymc
Answered

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Mega Movies hosted a film premiere on Friday night. They charged $9 for adults and $4 for children. Eighty-four adults and children attended, and $691 was made in ticket sales. How many children and how many adults went to the film premiere?
A. 17 children; 67 adults
B. 10 children; 74 adults
C. 7 children; 77 adults
D. 13 children; 71 adults

Sagot :

the answer is D you get this from using simultaneous equations the working out is shown in the photo. ignore the stuff at the top of the page
View image cromano2

Answer:

D. 13 children; 71 adults

Step-by-step explanation:

9a + 4c = 691

a + c = 84

9a + 9c = 756

- 9a + 4c = 691

5c = 65

c = 13

84 - 13 = 71

a = 71

Hope this helps!

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