The age old problem with fuel calculations .... contingency.
Unfortunately there does not seem to be any consistency in the exam questions
... so for this one ...
TOM = DOM + TL + FUEL
Contingency, as you say, the greater of 5% TRIP and 5 mins
holding at 1500ft.
You are given FINAL RESERVE - but they do not tell you what kind of aeroplane
it is ... assuming it is a turbine engined aeroplane,
1225 kg is 30 mins holding, so
5 mins holding would be 205 kg.
5% TRIP = 90 kg.
SO, there is uncertainty - do the calculation with both CONTINGENCY fuels - see
what turns up in the answers ...
5% cont ....... TOM = 34000 + 13000 + 1800 + 90 + 1400
+ 1225 = 51515 kg
5 mins cont ... TOM = 34000 + 13000 + 1800 + 205 +
1400 + 1225 = 51630 kg
So, I will go with 51515 kg