exam... more like an evaluation

2day got maths exam.. die lor wad is da crazy lec of ours gonna test us on.. wen 4 class
c c nth. so happy lor.. no exam..den suddenly she come n bomb us. ur exam later 3.30 @ C4.
C4 is circuit @ level 4. wtf... y so high up 1???
break 30 mins go sit 4 de exam.. every1 sat next 2 erach other hoping can help each other.. as usual la anywhere. go in open test paper.. fuck man.. all different sets of paper. den we ask de lec. she said 'there's 4 sets of paper' wtf... every1 look @ each other.. how a??
do onli lor... do a bit den ask eh dis 1 how a? like dis like dis like dis... ah yes okok.. settle..
16.10 finish done. was a bit hard.. but den ok la.. simple simple question ni.. sum questions bladdy confusing.. dunno wad was it asking 4.. 1 question was even crazier..

a tank has 2 inlet pipes, 1 pipe can fill up the tank in 2 hours and another can fill up in 4 hours.
calculate the hours and minutes dat the tank needs to be filled up. the outlet can empty the tank in 6 hrs..

wtf is it asking??!??!
i didnt do dis question.. cant think it thru.. after exams got a phone call. dis guy wants 2 buy the old ford dat was supposedly to be our track car. due to financial problems cant make it happen.
will be meetin up wit him on sunday to discuss abt the car...
now i wanna go play game..
supposed to plan 4 my course..aiya later 1st la...