a).21,6 litri .........................................300 km
x litri .............................................. 100 km
21,6/x=300/100
21,6*100=300x
2160=300x
x=2160:300
x=7,2 litri
b).21,6 litri ........................................300 km
y litri..............................................425 km
21,6/y=300/425
21,6*425=300y
9180=300y
y=9180:300
y=30,6 litri
c). 21,6 litri .............................................300 km
z litri ................................................57,75 km
21,6/z=300/57,75
21,6*57,75=300z
1247,4=300z
z=1247,4:300
z=4,158 litri
Sper că acest lucru doreai .