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When you start part (b), you need to remember that number of male participant is equal to the female participants before 40 males left and 60 females joined. So the addition of the two changes will form the number which is excess compared to the male participants (1 unit).
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Hello, this is part 1. Can try drawing out the model, it is easier than looking at ratios alone. Hope it helps!
Date Posted:
4 years ago
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Hello, using models again. Try to form equations from the model and info given and found in the previous part. Hope it helps!
Date Posted:
4 years ago