Question 175252
The length of the course isn't given,
so I can pick any length. I'll
pick {{{7.2}}} miles
Using {{{d = r*t}}},
Barbara's time for the race is:
{{{t[b] = 7.2/9}}}
{{{t[b] = .8}}}hrs
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Ramir's time for the 1st half is:
{{{t[r1] = 3.6/8}}}
{{{t[r1] = .45}}}hrs
Ramir's time for the 2nd half is:
{{{t[r2] = 3.6/10}}}
{{{t[r2] = .36}}}hrs
{{{t[r1] + t[r2] = .45 + .36}}}
{{{t[r1] + t[r2] = .81}}}hrs
Ramir took {{{.01}}}hrs longer, or
{{{.01*60 = .6}}}min, or
{{{.6*60 = 36}}}sec longer to finish, so
Barbara won