Question

O pompa electrica scoate din fintina 30litride apa in 12 secunde.
In cit timp se va umple cu apa un butoi de 800litri? Dar de 1000litri
Cita apa scoate pompa in10secunde
dar in18secunde dar in 2minute

Answer 1

3o L--------------- 12 sec

800 L ------------- x

x=800x12:30=320 sec

30L------------------- 12 sec

1000 L ------------------- x

x=1000x12:30=400 sec

30 L------- 12 sec

x L-------------- 10 sec

x=10x30:12=25 L

30L -------------- 12 sec

x ------------------------ 18 sec

x=30x18:12=45 L

30 L--------------- 12 sec

x ------------------- 120 sec

x=30x120 : 12=300 L