In a class of 80 seniors, there are 3 boys for every 5 girls. In the junior class, there are 3 boys for every 2 girls. If the two classes combined have an equal number of boys and girls, how many students are in the junior class?
math - Steve, Tuesday, July 9, 2013 at 2:45pm
If there are
3x senior boys and 5x senior girls
3y junior boys and 2y junior girls
3x+3y = 5x+2y
3x+5x = 80
juniors have 60 boys and 40 girls.
seniors have 30 boys and 50 girls
Math - ???, Monday, October 26, 2015 at 6:22pm
Because 60 doesn't = 70
Because 90 = 90
S = 30 boys and 50 girls
J = 60 boys and 50 girls