351 children and 308 adults swam at the public pool.
Step-by-step explanation:
Let,
Children = x
Adults = y
Price per children = $1.75
Price per adult = $2.00
According to given statement;
x+y=659 Eqn 1
1.75x+2y=1230.25 Eqn 2
[tex]Multiplying\ Eqn\ 1\ by\ 2\\2(x+y=659)\\2x+2y=1318 \ \ \ Eqn\ 3\\Subtracting\ Eqn\ 2\ from\ Eqn\ 3\\(2x+2y)-(1.75x+2y)=1318-1230.25\\2x+2y-1.75x-2y=87.75\\0.25x=87.75\\Dividing\ both\ sides\ by\ 0.25\\\frac{0.25x}{0.25}=\frac{87.75}{0.25}\\x=351\\Putting\ value\ of\ x\ in\ Eqn\ 1\\351+y=659\\Subtracting\ 351\ from\ both\ sides\\351-351+y=659-351\\y=308[/tex]
351 children and 308 adults swam at the public pool.
Keywords: Linear equations, Division
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