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# Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

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1. (Original post by ebaniii)
for q25, would it be fine if you left as

1/4 - root6/12 ??
I'm not sure I think it said simplify as much as possible, so you may lose 1 mark :/
2. (Original post by AVFTB)
How is question 11, 36%. Please can you show the working out.
Rent % of total spending £800 Q:
800 * 30% = 240
240 + (240 * 20%) = 288
288 / 800 = 72 / 200 = 36 / 100
Rent = 36% of total spending
3. (Original post by MrsGren)
answer to the pi question?? 100-25pi
its not 75pi is it??

No that's the final answer, just simplify the 100-25pi to 25(4-pi)
4. thank you
got that question wrong!!!!
5. (Original post by Pedaly7)
How did you get 1.7 and 4.7. I drew the graph of x+y=6 so (y=6-x) and I wrote down the points of intersection

which are -1.7 and 4.7 scrub
6. Any predictions on what mark is needed for a C?

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7. (Original post by Pedaly7)
How did you get 1.7 and 4.7. I drew the graph of x+y=6 so (y=6-x) and I wrote down the points of intersection
For the x+y=6 simultaneous equation, you had to also give y coordinates as well as x coordinates so one should have 4 answers in total (x= .... y= ..... OR x=...... y= ......)
8. For the last question, could u simplify it to (1-root2) divided by 4, rather than (3-root6) divided by 12?? Cuz I simplified it
9. What did you get for the Angies varnish question?
10. (Original post by LogicalFallacy)
Hey, if anybody is willing to contribute the answers, and preferably the questions, then I shall set up a mark scheme for you all. Thanks in advance!

Can people please attach question numbers to their answers? Method would be appreciated.
Spoiler:
Show
Question 1. What is the volume of the prism?
Area of face = 30cm² Length of prism = 25cm.

30cm² x 25cm = 750cm³

Question 5(?). Estimate 892 18.9Round to 1 significant figure900÷20 = 45
Question 6. A teacher is picked at random. There is a 3/5 chance they are female. 36 are males.
How many teachers are there altogether?

2/5 of teachers are male. 36 are male.

2/5 of total = 36
2 x 18 = 36
18 x 2 = 90.

Question (?). X² = 4(X-3)²

X² = 4[(X - 3)(X - 3)]
X² = 4[X² - 3X - 3X+ 9]
X² = 4[X² - 6X + 9]
X² = 4X² - 24X + 36

0 = 4X² - X² - 24X + 36
0 = 3X² - 24X + 36

0 = 3[X² - 8x + 12]
0 = 3[(X - 6)(X - 2)]

X = 6 or X = 2

Question 13(?). How many females visited the art gallery?
66 students went on the trip.

3 different activities - Art Gallery, Skating, Bowling.

Question 11(?). What percent of his total spending is his rent now?

Question 25.
Attachment 538753
(3-√6)
12
11. (Original post by SkyeAmber)
What did you get for the Angies varnish question?
No, because she needs 4 tins.
12. (Original post by Amyrosee)
For the last question, could u simplify it to (1-root2) divided by 4, rather than (3-root6) divided by 13?? Cuz I simplified it
No, that's not how surds work. You can't simplify root six because no square numbers can come out of it.
13. (Original post by Pedaly7)
How did you get 1.7 and 4.7. I drew the graph of x+y=6 so (y=6-x) and I wrote down the points of intersection
Yeah, that's what I'm thinking
14. (Original post by Redcoats)
For the x+y=6 simultaneous equation, you had to also give y coordinates as well as x coordinates so one should have 4 answers in total (x= .... y= ..... OR x=...... y= ......)
It just said work out the x values.
15. Hi guys, for the last question about the triangles, I think i forgot to half the area for one of the triangles. Foolish me, so now i got the same answer as everyone else except at the bottom I have 6 instead of 12. Can I still get around 2 marks for that?
16. (Original post by Redcoats)
For the x+y=6 simultaneous equation, you had to also give y coordinates as well as x coordinates so one should have 4 answers in total (x= .... y= ..... OR x=...... y= ......)
Thats what I did but i didnt get -1.7 and 4.7
17. (Original post by LogicalFallacy)
Hey, if anybody is willing...
You may want to edit the image for the last question so as not to mislead people.

AD = AB is not right.
18. 43 of the females out of 66. 10 male people went bowling . so 66-43=23 Males left. 23-(10+4)= 9 Males left for art gallery . 20-9 =11 females to art . Hope this helped anyone
19. (Original post by Lakshii)
how many marks was the last question ?
I remember it being 3

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20. What did u get for the last 7 marker?

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