Răspunsuri

2014-04-17T15:48:10+03:00
6 robinete........15 ore
9 robinete.........x ore ⇒x= \frac{6 *15}{9} ⇒x=10 ore

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2014-04-17T15:57:44+03:00
6 robinete.....................15 ore
9 robinete................x ore
{6,9}i.p{15,x}
6*15=9*x
x=6*15/9
x=2*5
x=10
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