Răspunsuri

2014-05-20T21:49:18+03:00


30:2=15min(face in 10 minute)

15x5=75min(face in 50 min)

13 3 13
2014-05-20T21:50:02+03:00
30 km.....20min
50 km....x
sunt invers proportionale deci : 30x 20=50x 600=50x  x=12
(30:2)x5=75 minute
am facut invers...trebuia 50 min....scuze.
E ok, te-ai grabit :)