Respuesta :
Let after t hours , the two men are 200 miles apart .
So the distance travelled by first man is
[tex] = 6t miles [/tex]
And distance travelled by second man is
[tex] = 10 t miles [/tex]
So the equation is
[tex] 6t + 10 t = 200
\\
16t = 200
\\
t = \frac{200}{16} = 12.5 hours [/tex]
Therefore after 12.5 hours , they are at 200 miles apart .