Question 1110823
<pre><font face = "consolas" color = "indigo" size = 4><b>
Hi  
D = rt  0r r = D/t
(r+c) = 7056/8 = 882
(r-c) = 6096/8 = 762
2r = 1644
 r = 822mph, jet's speed jet in still air
rate of the Jetstream = 60mph {{{882-822}}}