Question

Doua robinete pot umple un acvariu in 20 de minute.Un singur robinet poate umple acelasi acvariu in....minute

Answer 1

2 robinete........20 minute
un robinet........x minute $\frac{2}{1} = \frac{x}{20} \\ \\ x= \frac{20*2}{1} \\ \\ x=40$ minute

Sper ca te-am ajutat.

Answer 2

2robinete..........20minute
1robinet....... X min
X=2 x 20 supra 1 = 40min