How much can you write in 1.3 minutes? The mantra of 1 point earns 1 mark is, I believe, correct. So, in a 12 mark question, you have 12 * 1.8 minutes = 21.6 minutes.
Of that time period, 12 / 2 = 6 minutes should be spent planning what your 12 points are going to be.
But that means you now only have 21.6 – 6 minutes = 15.6 minutes to write out your answer. And that’s only 1.3 minutes per point.
So, again. how much can you write in 1.3 minutes?
“…I could not complete the whole exam paper” suggests that you’re taking longer than 1.3 minutes to write out each point