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Arsey's Edexcel C1 Summer 2013 Model Solutions BOTH PAPERS

Here are my solutions to the Core 1 paper. Reasonably straight forward paper I thought.

I think it will be about 62-63 for an A.

I have also uploaded my solutions to the international paper which I thought was quite a bit harder. However I made 2 errors

Original post by kenjina

I think you've made two mistakes:

On question 6D, the value of x2 is 1-k=1-1.5=-0.5

So, x1+x2=1-0.5=0.5

50*0.5=25, which I think is the right answer and not 75.

On question 8C, the final range should be 2.8<x<3, not 0<x<3. I made that same mistake during the exam :frown:

(edited 10 years ago)

13 May C1 Model red.pdf607.0KB

13 May C1 International Model red.pdf508.1KB

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Reply 1

vxrz

You reckon boundaries will be higher this year?

Reply 2

Robbie242

Hey Arsey sorry to bother you on the C1 thread but any idea when M1 unofficial markscheme will be going up, cheers :smile:

Reply 3

gooner4ever

Original post by Arsey

Here are my solutions to the Core 1 paper. Reasonably straight forward paper I thought.

I officially love u mate.....

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Reply 4

Peterweso

Think I dropped one mark each on 5b and 6b. Not sure how x > -1/3 though

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Reply 5

Peterweso

Take that back actually :smile:

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Reply 6

zzachjoy

I'd give myself 62+ any method marks, it was ridiculous, my mind just went blank /:

Reply 7

the A* guy

Original post by Arsey

Here are my solutions to the Core 1 paper. Reasonably straight forward paper I thought.

Thank you very much for uploading this mark scheme.

I have one little question, in Q7 i made a silly mistake, and made 21/2 simplify to 11.5 (instead of 10.5), so i ended up with S₂₁=9200 (instead of 8400), but i did the next part correctly and got 18600. Then i added the two giving me 27800 instead of 27000. How many marks do you think i will lose for this out of 5? will is get any ECF marks?

(edited 10 years ago)

Reply 8

pilotluke1

For the phone question I used N as 24 but used the right method in part B how many would I gain out of 7 on that question? Also for the co-ordinates of intersection of L1 and L2 I only got 1 co-ordinate correct?

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Reply 9

zzachjoy

What do people reckon grade boundaries are?

Reply 10

Stevoo96

Well it went ok, I think I only dropped 5/6 marks depending on what marks are dropped for.

Reply 11

Angelica.

How did people find it compared to past papers?

Reply 12

Meera.S.

Original post by zzachjoy

What do people reckon grade boundaries are?

70% might be an A...

Reply 13

mynameisntbobk

Original post by Arsey

Here are my solutions to the Core 1 paper. Reasonably straight forward paper I thought.

For question 6b, did we have to solve the silmutaneous equations by elimination? I did it by substitution and ended up with the same answer, I didn't really consider any other methods since I was a bit stressed I only had about 5 lines to do the working out for part a and b

Reply 14

Potential Medic

On the arithmetic sequence question I got the first part right and got 4800 for 21 terms, but stupidly wrote 600x31=1800 and hence ended up with 10800 as the total. How many marks would I lose on this question? Got everything else right though :biggrin:

Just really wanted 100 UMS for once.

Reply 15

Zigggyy.

I think it may be around 62 for an A? Was a pretty nice paper :smile:

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Reply 16

Soufflegirl

This was a relief! Thank you for putting these up! I think I've just lost marks due to silly mistakes. Ahh. It was a nice paper.

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