If you follow HWD advice don't be surprised to get the WRONG answer. This question or very SIMILAR has been asked for sometime now, BUT with DIFFERENT parameters. DO NOT remember 4:07 as this may well be WRONG.
Let THE expert guide you. I am alarmed that the number of students I get who have not been shown/remember how to sort this problem correctly. You need to apply JAA fuel policy rules.
So for some FREE advice :-
Table should look like this :-
---------------------Fuel---------Time
Trip----------------5800--------2:32
Cont 5%
Alternate-------- 1800--------0:42
Final Reserve----1325
Min T/O
Extra
Taxi-----------------200
Ramp------------10000
1. Calculate Contingency Fuel 290 kg
Calculate Contingency Time 152 min @ 5% = 08 mins
2. Calculate Min T/O = 9215
3. Calculate Extra 10000 - (9215 + 200) = 585 kg
4. RULE Final reserve for Jet A/C = 30 mins
5. Calculate Extra endurance = 585 kg @ 2400 kg/hr = 17 mins
NB. Extra does not include final reserve and may well be at a different burn rate in reality.
6. Taxi fuel is NOT included in endurance calculations
Your table should now look like this :-
---------------------Fuel---------Time
Trip----------------5800--------2:32
Cont 5%-----------290--------0:08
Alternate-------- 1800--------0:42
Final Reserve----1325--------0:30
Min T/O
Extra---------------585---------0:17
Taxi-----------------200
Ramp------------10000
Add up the times and get 4 hours 09 Mins being the ATC or Total Endurance as entered on ICAO Flight Plans.
This question needs to be tackled logically and NOT via guess work.
QED - Next time £30 ph but at least you might pass !!