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o locomotiva consuma 360 t de carbune in 30 de zile.o alta locomotiva consuma 350 t in 35 de zile.cat carbune economiseste a doua locomotiva intr-un an

Răspuns :

prima locomotiva consuma 360/30 =12 t/zi
deci intr-un an consuma 12* 365 t

a doua consuma 350/35= 10t/zi
deci intr-un an consuma 10* 365 t

a doua locomotiva economiseste intr-un an
12* 365- 10* 365= 2* 365= 730 t

O zi buna!