Respostas

2014-08-05T12:50:54-03:00
\boxed{vm= \frac{x-xo}{t-to}}

90= \frac{600}{t}

t= \frac{600}{90}= \frac{60:3}{9:3}= \frac{20}{3}h

 \frac{20}{3}* \frac{60}{1}= \frac{1200}{3}=400min

Aproximadamente, 6 h e 36 min.