ALGEBRA 1 A
posted by Terri .
The St. Mark's Community Barbecue served 250 dinners. A child's plate cost $3.50 and an adult's plate cost $7.00. A total of $1347.50 was collected. How many of each type of plate was served? Is the answer 125 for child and 125 for adult is this correct?

250=C+A
3.5C+7A=1347.50
3.5(250A)+7A=
3.5A=472.5
A= 135
check my work