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Agata [3.3K]
3 years ago
9

PLEASE HELP ME!

Mathematics
1 answer:
Leya [2.2K]3 years ago
3 0

Answer:

54


Step-by-step explanation:

Let number of adult tickets sold be a

Let number of children tickets sold be  c


<u>139 tickets were sold:</u>

we can write:

a+c=139


<u>a total sales of $972.00:</u>

we can write:

5.4c+9.5a=972


Now solving for c in the first equation and substituting that into 2nd equation, we can solve for a, what we need. So:

c=139-a\\-------\\5.4c+9.5a=972\\5.4(139-a)+9.5a=972\\750.6-5.4a+9.5a=972\\-5.4a+9.5a=972-750.6\\4.1a=221.4\\a=54


Hence 54 adult tickets were sold.



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