(V铁块-V铁水)/V铁块=1/351-V铁水/V铁块=1/35V铁水/V铁块=1-1/35=34/35V铁块/V铁水=35/34 V铁块/V铁水-1=35/34-1(V铁块-V铁水)/V铁水=1/34
体积增加 1÷(1-1/35)-1=35/34-1=1/34
1/34