250 adult tickets and 150 children tickets were sold.
Step-by-step explanation:
Let,
Adult tickets = x
Children tickets = y
According to given statement;
x+y=400 Eqn 1
As adult ticket is $8 and children ticket is $5, therefore,
8x+5y=2750 Eqn 2
[tex]Multiplying\ Eqn\ 1\ by\ 5\\5(x+y=400)\\5x+5y=2000\ Eqn\ 3\\Subtracting\ Eqn\ 3\ from\ Eqn\ 2\\(8x+5y)-(5x+5y)=2750-2000\\8x+5y-5x-5y=750\\3x=750\\Dividing\ both\ sides\ by\ 3\\\frac{3x}{3}=\frac{750}{3}\\x=250\\Putting\ value\ of\ x\ in\ Eqn\ 1\\250+y=400\\y=400-250\\y=150[/tex]
250 adult tickets and 150 children tickets were sold.
Keywords: Linear equations, subtraction
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