The proportion of the money that Sarah gets is 2/3 of the total amount
From the complete question, the fraction of the money is:
Caroline = 1/9
The remaining amount is calculated using:
Remaining = 1 - 1/9
Evaluate
Remaining = 8/9
Colin and Sarah's share is:
Colin : Sarah = 1 : 3
This means that Sarah's share is:
Sarah = 3/(3 + 1) * 8/9
This gives
Sarah = 3/4 * 8/9
Evaluate
Sarah = 2/3
Hence, the proportion gotten by Sarah is 2/3
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