Question 155458
3700/5=s-j
9280/8=s+j
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3700/5+9280/8=2s
(8*3700+5*9280)/40=2s
40*2s=29,600+46,400
80s=76,000
s=76,000/80
s=950 km/h is the speed of the jet.
3700/5=950-j
740-950=-j
j=210 speed of the jet stream.
proof:
9280/8=950+210
1160=1160