Hi, 1 last question, please help…thank you so much.
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ChiefKiasu
20. Let C be the number of children at the funfair.
Considering only the boys at the funfair,
3/5 C = 1/3(C+200)
3/5 C – 1/3 C = 200/3
(9 – 5)/15 C = 200/3
4/15 C = 200/3
=> C = (15/4)(200/3) = 250
So the number of girls are (2/5)250 = 100 #