SOLUTION: In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?

Question 950977: In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
"In a class of 20 students, 40% are boys."

So there are 20*0.4 = 8 boys

There are 20-8 = 12 girls.

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" Twenty-five percent of the boys and 50% of the girls wear glasses"

0.25*8 = 2 boys wear glasses

0.5*12 = 6 girls wear glasses

2+6 = 8 students wear glasses.

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