12x + 8(575-x) =5600
4x = 5600-4600
x =1000/4
x =250 adults
children = 325 children
adults =250
Let x be the adults and y children
12x+8y = 5600
and
x+y =575
Solving these two equations we get,
x= 250 and y= 325
Admission to mammoth cave is $12 for adults and $8 for children. One day, 575 peo...continues
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