分析:
假设原来长度为X和Y,剪掉长度为L,那么
(X-L)/(Y-L)=2/1---------------------(1)
(X-2L)/(Y-2L)=3/1------------------(2)
联立 (1)(2),消去L ,可得
X/Y=5/3
分析:
假设原来长度为X和Y,剪掉长度为L,那么
(X-L)/(Y-L)=2/1---------------------(1)
(X-2L)/(Y-2L)=3/1------------------(2)
联立 (1)(2),消去L ,可得
X/Y=5/3