The expenditure of a man is 70% of his income. If his income will successively increase by 20% and 50%, then his new expenditures is how much percentage more/less than his previous expenditure, so that his new savings become 2.5 times of the previous savings?

1
More, 50%
2
Less, 50%
3
Less, 54%
4
More, 54%

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