Math problem: RT Mart, Lotus at the beginning of the month, Tesco launched preferential shopping to welcome the National Day. RT Mart: 200 yuan gave 50 yuan a shopping voucher. - Training Enrollment Network

Math problem: RT Mart, Lotus at the beginning of the month, Tesco launched preferential shopping to welcome the National Day. RT Mart: 200 yuan gave 50 yuan a shopping voucher.

RT Mart: 200 yuan gave 50 yuan a shopping voucher. Buy 400 yuan sweater and get a shopping voucher of 100 yuan.

Lotus: All goods are sold at a 20% discount. 400 yuan's sweater, in fact, to 320 yuan.

Tesco: 200 yuan sends cash to 60 yuan. Buy 400 yuan sweater, get 120 yuan cash, and actually spend 280 yuan.

Therefore, it is the most cost-effective to buy sweaters in Le.

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