Enter at 2400nm, up to
the wind REF LINE and just make a pencil mark.
Now from 16000kg Fuel,
work backwards.
This can be tricky - but
for this example, the landing weight is 45000kg, which is the LW REF LINE, so
there is no LW adjustment to make.
Just draw a line from
16000kg across to the 29000ft pressure altitude curve.
From here, draw a line
down to the WIND REF LINE. Where this line meets the WIND adjustment curve you
marked earlier you get the 'max' head wind .... We come
up with a fraction under 40kts.
The answer spread is 35 /
15 / 70 / 0 ...... so the answer must be 35 kts.
Do NOT get worried if
your answer is slightly different from those on offer - this is quite common.
But In this case I would
be more than happy with the 35kt option ....