Số tiền của người đó là:
3000 x 25 = 75 000 (đồng)
Số vở loại 1500 đồng mua được là:
75 000 : 1500 = 50 (quyển)
Đáp số: 50 quyển.
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Số tiền mua 25 quyển vở 3000 đồng một quyển là:
3000×25=75000 ( đồng )
Số quyển vở loại 1500 đồng thì mua được là:
75000 : 1500 = 50 ( quyển )
Đáp số: 50 quyển vở