[計量] 請問一題OG(11th) 的數學題
第一次在板上提問 但困擾我許久...
請教教我
A rope 40 feet long is cut into two pieces.
If one piece is 18 feet longer than the other,
what is the length, in feet, of the shorter piece?
(A) 9
(B) 11
(C) 18
(D) 22
(E) 29
答案是 B
我一直搞不懂 為什麼解答會寫2x+18=40.....
懇請解答天王天后出面
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