140-100%
х-10%
х=140*10:100=14
---------
600-100%
х-30%
х=600*30:100=180
---------------
96-100%
х-3,2%
х=96*3,2:100=3,072
-------------
840-100%
х-4,2%
х=840*4,2:100=35,28
------------------------------------------------------------------------------------------
3-100%
х-15%
х=3*15:100=0,45
3+0,45=3,45
----------------
40-100%
х-25%
х=40*25:100=10
40+10=50
-----------------
4,7-100%
х-50%
х=4,7*50:100=2,35
4,7+2,35=7,05