Question 252809
3+2=5

3/5 are boys and 2/5 are girls
1-1/10=9/10
1-1/4=3/4
3/5*9/10+3/4*2/5=
27/50+6/20=
54/100+30/100=
21/25=.84=84%
which is reasonable since between 10 and 25% received scholarships so between 75 and 90% didn't