x- trebuetsia pervoi trube chasov,chtobi zapolnit' bassein. Togda:
1/x + 1/3x = 1/2;
8x=3x^2;
x=8/3=2 2/3 chasa;
Otvet: 2 2/3 chasa.
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x- trebuetsia pervoi trube chasov,chtobi zapolnit' bassein. Togda:
1/x + 1/3x = 1/2;
8x=3x^2;
x=8/3=2 2/3 chasa;
Otvet: 2 2/3 chasa.