75,000 : 17,200

No problem working this out, straight forward stuff.

But why is there no contingency fuel (5%) ?

Of course a flight must have contingency.

In these M&B questions we have to go along with the fuel figures given. Where does it say in the notes/info that you must add in 5% contingency? If I do that I won't get the right answer! Its obviously an error on the examiners part but as long as we know about we can deal with it.