To find H and O use CRP5 or similar:
Centre dot on TAS, 180 kts, rotate to wind direction, 045°; come down from centre
dot for wind speed, 50 kts; mark end of wind vector
at 130 kts.
Rotate to outbound track under
heading index; note drift 14°Stbd; rotate track to drift; note drift now
11°Stbd; rotate track to drift; note drift still 11°Stbd. Required heading
outbound will be 079° to track 090°; groundspeed out, O = 141 kts
Rotate to homebound track under
heading index; note drift 9°Port; rotate track to drift; note drift now
11°Port; rotate track to drift; note drift still 11°Port. Required heading
homebound will be 281° to track 270°; groundspeed home, H = 212 kts
Time to fly out = (1 x 212)/(141 + 212) = 0.6 hr at outbound groundspeed = 85 nm