6th grade math
posted by Chris .
The ratio of the number of adults to the number of students at the prom has to be 1:10. There are 477 more students than adults. How many adults are at the prom?
if there are x adults, there are 10x students.
10x = x+477
Not sure where the 2x came from, or why the divisions.
At the 6th grade school dance, there are 132 boys, 89 girls, and 14 adults.
In the cafetería , 100 milk cartons were put out for breakfast. At the end of breakfast, 27 remained.