Posted by Ana on Wednesday, December 26, 2012 at 4:23pm.
b = g-165
2/7 g = 3/5 b
(b,g) = (150,315)
b = g - 165
2 g/7 = 3 b/5
2 g/7 = (3/5)(g-165)
solve for g
then for b
then add b+g
Um... I really didn't understand you very clearly. So can you like go through this so I can understand cause I'm not really fimillar with algerbra.
There are g girls and b boys.
2 g/7 = (3/5)(g-165)
(See Damon's derivation)
(10/21)g = g - 165
11/21 g = 165
g = 315
b = 315 -165 = 150
Total = b + g = 465
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