I think that works like this...correct me if i am wrong
a) 33%
b) 25%
c) 25%
d) 15%
e) 10%
f) 10%
= 118% tab prices

A) is scratched so we add up the remaining percentages and get
a) scr
b) 25%
c) 25%
d) 15%
e) 10%
f) 10%
= 85% tab prices

then divide the above percentages in to 85% to get the final percentages
b) 29.4%
c) 29.4%
d) 17.6%
e) 11.7%
f) 11.7%

when converting these back to prices should i use the 85% or 100% this is part i am not sure of.

Shaun