SOLUTION: The boys and girls in a school are in the ratio 3 : 7. 25% of the boys and 20% of the girls are scholarship holders. How much per cent of the total students do not get scholarship

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Question 293381: The boys and girls in a school are in the ratio 3 : 7. 25% of the boys and 20% of the girls are scholarship holders. How much per cent of the total students do not get scholarships?
(a)68 (b) 75 (c) 79.8 (d) 82.5 (e) 78.5

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
3/4*(3/10)+4/5*7/10=157/200=.785=78.5%