Answer:
Neither, they have the same amount now?
Explanation:
Sally = £450 = 100%
Gone up by 30% so 100% + 30% = 130% = 1.3
£450 x 1.3 = £585
Susie = £650 = 100%
Gone down by 10% so 100% - 10% = 90% = 0.9
£650 x 0.9 = £585
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