[計量] gwd 1-30
Q30:
Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did
she buy?
(1) She bought $4.40 worth of stamps.
(2) She bought an equal number of $0.15 stamps and $0.29 stamps.
這題GWD答案寫成D是錯的
我的問題是 若按照正統的數學觀念 兩個未知數須由兩個方程式才能解 所以答案應該是C
但是(1)中 為了滿足張數只能正整數的情況下 可以直接"湊出"唯一的答案來
所以 這時候答案應該選C還是A?
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08/09 13:33, , 1F
08/09 13:33, 1F
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08/09 13:58, , 2F
08/09 13:58, 2F
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08/09 14:40, , 3F
08/09 14:40, 3F
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08/09 14:42, , 4F
08/09 14:42, 4F
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08/09 21:53, , 5F
08/09 21:53, 5F
推
05/22 15:14, , 6F
05/22 15:14, 6F
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