[計量] saplings are to be planted 30 feet ...
題目是
saplings are to be planted 30 feet apart along one side of a straight lane
455 feet long, If the first sapling is to be planted at one end of the lane
, how many saplings are needed?
(A) 18 (B) 16 (C)15又1/6 (D) 15 (E)14
我選D 但答案是B
我想是B的原因大概是因為兩端端點都要種樹 所以加1
但是我不明白題目在那兒暗示了道路最尾端也要種??
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