On a certain hot​ summer's day.

Question

 On a certain hot​ summer's day, 307 people used the public swimming pool. The daily prices are $1.75 for children and $2.00 for adults. The receipts for admission totaled $594.00. How many children and how many adults swam at the public pool that​ day?

Answer 1

1.75C + 2A = 594

C+A = 307

A = 307-C

1.75C + 2(307-C) = 594

1.75C - 2C = 594-614

.25C = 20

C =4(20) =80 children

A =307-80 = 227 adults

140+454 =$594, children's ticket revenues + adult ticket revenue = total revenue