4) 3/100x700 l=3x7 l=21 l600 km x3/100=6kmx3=18 km
4100 kg x3/100=41 kmx3=123 km
5)
240 x15/100=simplif=12x3=36
80 x15/100=1200/100=12
44 x15/100=660/100=6,6
6) 180x20/100+240x45/100 =
36+108=144
7)
2100 x3/100=63
5000x17/100=850
475x32/100=15200/100=152
250 x124/100=31000/100=310
180x85/100=15300/100=153
92000 x213/100=19596000/100=195960