Question

Ngày thường mua 5 bông hoa hết 10000 đồng. Ngày lễ với số tiền đó chỉ mua được 4 bông hoa như thế. Hỏi giá hoa ngày lễ tăng hay giảm bao nhiêu phần trăm so với ngày thường?

Answer 1

giải

ngày thường mua hết số tiền là:

10000:5=2000(đồng)

ngày lễ mua là:

10000:4=2500(đồng)

tăng số %là: 

2500:2000=125%

Answer 2

 125

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Answer 3

tăng 80% nha bạn