O masina parcurge60k in 2ore.in cate ore va parcurge 210km

Răspuns :

60 km------- 2 h
210km---------- x
____________
x= (2×210)/60
x=420:60=7 ore
x= 7 ore
Cat parcurge pe ora ?
60 : 3 = 30 km/h

In cate ore va parcurge 210 km ?
210 : 20 = 7 ore