露營時,掌廚人耍量出四十克的醋。但是,他手邊僅有五十克單位的量斗,及三十克量斗各一個。請問,他該如何做,才能量出四十克的醋?3 |# H6 X+ k A* a9 q) W
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answer will be give by tonight公仔箱論壇 K4 R/ \- E/ y7 g; v; k( e
fill 30 put in 50 3 H, M0 n: @* V. v2 q8 jtvb now,tvbnow,bttvbfill 30 put in 50 now 10 in 30tvb now,tvbnow,bttvb* @7 \ | ` K" i
empty 50 put the 10 in - I7 ?$ _, v) u8 q* gfill 30 put in 50=40