Răspuns :
Răspuns:
1 luna.....980t de carbune
2luna...? de 10 ori m.m
3luna...? cît jumate din a doua
Rezolvare
Cîte tone sau extras in 3 luni?
980×10=9800 (tone 2 luna)
9800÷2=4900( tone 3 luna)
980+9800+4900=15580 tone in total
- schema-1 luna ...980 t
- 2 luna...?,de 10 ori mai mult
- 3luna...?,de 2 ori mai putin
- rezolvare cu plan
- cati carbuni au extras in luna a 2?
- 980*10=9800t
- cati carbuni au extras in luna a 3?
- 9800/2=4900t
- cati carbuni au extras in total in cele 3 luni?
- 980t+9800t+4900t=15680t
- raspuns-15680 t in total carbuni