Răspuns :
280 × 3 = 840
600 + 300 = 900
150 + 840 = 990
990 - 900 = 90 L raman
600 + 300 = 900
150 + 840 = 990
990 - 900 = 90 L raman
calculam initial cati litri vor curge in 30 de minute
280l.......10min
x l...........30 min
x=(280x30):10=840l
apoi calculam cati litri vor iesi in 30 de minute
600l......20 min
y l..........30 min
y=(600x20):30=400l
deci raman
150+840-400=590l
280l.......10min
x l...........30 min
x=(280x30):10=840l
apoi calculam cati litri vor iesi in 30 de minute
600l......20 min
y l..........30 min
y=(600x20):30=400l
deci raman
150+840-400=590l