Question 412429
Win means which one will get to a certain height first,
but I don't know what that height is.
I can find out when they will both be at the same height.
The blue balloon has to make up the difference in their heights 
red:
{{{h = 40t}}}
blue:
{{{h + (95 - 30) = 50t}}}
{{{h + 65 = 50t}}}
{{{h = 50t - 65}}}
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Make the {{{h}}}'s equal
{{{40t = 50t - 65}}}
{{{10t = 65}}}
{{{t = 6.5}}} min
and, since
{{{h = 40t}}}
{{{h = 40*6.5}}}
{{{h = 260}}}
This is the amount that the red balloon rises in 6.5 min
The height above GROUND where the 2 balloons meet is
{{{h[g] = 290 + 95 = 385}}} ft in 6.5 min