1
po 2h
2x25.5=51km
2x28.8-57.6km
51+57.6=108.6km
po 1/3h
25.5/3=8.5km
28.6/3=9.6km
8.5+9.6=18.1km
108.6+18.1=126.7km
2
(2/3 - 0.5) do 2 + 36= (4/6 - 3/6) do 2 + 36 = 1/6 do 2 + 36 = 1/36 + 36= 36 i 1/36
2 i 5/6 razy 8.5 = 17/6 * 17/2 = 289/12 = ~24
3
2x+2y=50.4
x=3.6+y
podstawiamy
7.2+2y+2y=50.4
4y=50.4 /4
y=10.8
x=10.8+3.6=14.4
pole
a*b = 10.8*14.4 = 155.52