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# OCR (non mei) D1 Wednesday 15th June 2016 watch

1. Is anyone making an unofficial markscheme
2. Does anyone have a photo of the paper?
3. pretty sure I messed up the linear programming question, just kept reading it and nothing of use was registering in my brain, I managed to plot the one it gave in the question (and prove why it was a constraint) and got 99x +104y < 600 and then plotted that, got the 5 attendants and worked out a minimum cost (thought it was wrong I should get some marks somewhere) so hopefully I managed to get half marks or so in that question. hoping for a fairly decent A to cover for my slightly sketchy attempts at C1 and C2!
4. (Original post by Lazoom)
Thats right thinking about it know, it'll be half 6 as you leave to make 2 arcs, then plus the one from repeating. :/
I got L as four. I drew one of the routes to verify lol
5. (Original post by rich1334)
Yeah, I swear another of the people mentioned in the question was named Gordon too, although I might just be imagining things at this point
Well, I'm glad I've done all of my applied modules for the year (just C3 and C4 to go!). I hate having to wade through someone's dietary requirements, ice cream preferences, wedding plans etc in order to answer the bloody question! (i.e. It's rarely just 'find the shortest past from a to g.' ) The beauty of pure maths exams is that it's straight to the point (i.e. 'convert this set of concise mathematical symbols into another form of concise symbols' ) and there's no need to fear about godawful, contrived puns or convoluted walls of text!
6. (Original post by rebirth61213)
Well, I'm glad I've done all of my applied modules for the year (just C3 and C4 to go!). I hate having to wade through someone's dietary requirements, ice cream preferences, wedding plans etc in order to answer the bloody question! (i.e. It's rarely just 'find the shortest past from a to g.' ) The beauty of pure maths exams is that it's straight to the point (i.e. 'convert this set of concise mathematical symbols into another form of concise symbols' ) and there's no need to fear about godawful, contrived puns or convoluted walls of text!
I feel exactly the same. But I still have to do M1. Then C3 is last.

Just frustrating having to work through a question involving people like Roland Neede and Rhoda Rage
7. (Original post by Mathematicus65)
I reckon 66 - 100 UMS
61 - A*
55 - A
50 - B
this seems fair. I think it was a fairly average paper, if not slightly easier than usual. But the linear programming is normally a lot simpler and it was worth a few marks. I'd say 55-58 for an A
8. (Original post by Lazoom)
I got 88 for my answer
I also got 88
9. help. in the linear programming Q, I was going to write 99x etc.. as the constaint but im sure the additonal £35 was optional so i crossed it out.
10. (Original post by RmAthS)
I also got 88
What question is this?
11. I can't be the only one who noticed that the 3 kids drawing the graphs were called Holly, Olly and Polly
12. (Original post by garlicbread23)
help. in the linear programming Q, I was going to write 99x etc.. as the constaint but im sure the additonal £35 was optional so i crossed it out.
The constraint given to us came from the hours available.
The other 3 constraints were:
x>1
y>1
99x+104y<600

The decorations for the outfits were not classed as optional (at least it didn't say so in the question).

So, it was £35 for the bridesmaids extras, 8 metres of fabric required at £8 per metre made £64, so the total per bridesmaids dress was £99.

£80 for the pageboy extras, 3 metres of fabric at £8 each made £24, so the total per pageboy outfit was £104.

The available budget for the worker guy was £600, hence 99x+104y<600.

The x>1 and y>1 constraints because the woman wanted at least 1 of each bridesmaid and pageboy.
13. (Original post by TheTopStudent)
I can't be the only one who noticed that the 3 kids drawing the graphs were called Holly, Olly and Polly
There was also a molly
14. (Original post by hallo.C)
What question is this?
I can't remember which question exactly, but it was one of the graph ones where you had to find a route of something. Sorry that's not very useful but I just remember getting 88 as an answer
15. (Original post by Lazoom)
There wasnt a 6iiib think you mean a question on 7, i put through L 7 times I believe, as it had 6 arcs and one repeated through it, wasnt 100 percent on it though
I think it was four because you had to make the graph Eulerian (meaning L has a node order of 8) so that each time you reach L you use one node to get to it and another to get away - hence you pass through it four times. Super annoyed because I've only just realised this after the exam!!
16. (Original post by RmAthS)
The constraint given to us came from the hours available.
The other 3 constraints were:
x>1
y>1
99x+104y<600

Dammit i had those but I changed it to not include the 35 and 80 because it called them items so I didn't count it as a material..... and the fact that it said ALL costs in the last part of the question

how many marks you think that lost?
I got p=5 when x=4 y=1 with the graph
17. (Original post by Furthermaths100)
For the last question did people get the route of weight 295 minutes?
I did! Although I got different to everyone else in my class
18. (Original post by iubiubiub)
Dammit i had those but I changed it to not include the 35 and 80 because it called them items so I didn't count it as a material..... and the fact that it said ALL costs in the last part of the question

how many marks you think that lost?
I got p=5 when x=4 y=1 with the graph
well finding the constraints was worth 4 marks, drawing the graph and shading the feasible region was worth another 4, then 1 mark for how many guests could attend and another 3 (I think?) for the last part of the question.
you'd probably get 2-3 out of 4 for the first part. Probably 3 for the second part providing you drew the constraints right (ecf). And then there should have been 5 guests/attendants for the next mark. And for the final 3 the answer (I believe) was £1715. So as long as you got ecf and the rest of the question right, I don't see why you shouldn't get 9/12 ish
19. (Original post by Mathematicus65)
I reckon 66 - 100 UMS
61 - A*
55 - A
50 - B
How does that work? Surely 72 will always be 100 UMS, and 66 could be anywhere from roughly 90 - 99 depending on the grade boundaries?
20. Does anyone have a full unofficial mark scheme?

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