Question-45905

Question Number 45905 by peter frank last updated on 18/Oct/18

Answered by math1967 last updated on 18/Oct/18

l e t n o o f b o y s = x a n d n o o f g i r l s = y

∴ \frac{50 x + 54 y}{x + y} = 52

50 x + 54 y = 52 x + 52 y

2 x = 2 y \Rightarrow \frac{x}{y} = \frac{1}{1}

b o y s : g i r l s = 1 : 1

Answered by math1967 last updated on 18/Oct/18

t o t a l r e d u c e 15 \times 1 = 15 k g

w t . o f n e w p u p i l = 40 - 15 = 25 k g a n s

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