Question

1)
4c.c.----------------6c.d.-----------------26m.st.
2c.c.----------------6c.d.-----------------26m.st.
_______________________________<
?c.c./?c.d

2)
4ore--------------9ore------------1330km
8ore--------------6ore-------------1340km
____________________________
Ce viteza are fiecare tren?

3)
5dreptunghiuri--------------9triunghuri-------------161betisoare
8dreptunghiuri--------------10triunghiuri-----------218betisoare-_____________________________________________b. dreptunghuri ? b. triunghuri?

REZOLVATIMILE DAU COROANA SI PUNCTE!!!!!!!

Answer 1

2)  Egalam 4x2 ore........9x2 ore...........1330x2 km
                     8 ore...........6 ore..............1340 km

18-6=12 ore
2660-1340 = 1320 km

1320:12 = 110 km/ora al doilea tren

4 ore .......9x110 km........1330 km
primul tren = (1330-990):4 = 85 km/ora