Posted by Tyler on Tuesday, January 1, 2013 at 8:36pm.
number of boys ---- b
number of girls ----- g
(2/7)g = (3/5)b
g = (3/5)(7/2)b = 21/10 b
g - b = 165
21b/10 - b = 165
21b - 10b = 1650
11b = 1650
b = 150
g = 21/10(150) = 315
150 boys, 315 girls, total of 465
check:
(2/7)(315 = 90
(3/5)(150) = 90
yeahhh
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