Question

O pompa electrica scoate din fintana 30 l apa in 12 secunde.
Dar in 10 sec??Dar in 18 sec?Dar in 2 minute??
______________
Am nevoie de rezolvare:)

Answer 1

30/12 = 2,5 litri /secunda
2,5 x 10= 25 litri
2,5 x 18 =45 litri
2min=2x60 sec/min=120 secunde
2,5x120 =300 litri

Answer 2

30l-----12 sec
x l  ----- 10 sec
x=30*10/12
x= 25

30----12
x----- 18
x= 45

30----12
x----- 120
x= 300