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*Rough*DECISION 1 EDEXCEL JUNE 17TH MARKSCHEME w/Explained Answers

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Original post by TheMathsMan
w = 11 because they tell you the float is 1 so 17 - w - 5 = 1 therefore w = 17-5-1 which is 11
z = 4 because that was the shortest going back when the early was 3 ..
y = 17
x = 22
so you got 2 out of the 4 right ...
Reply 41
Avatar for TrueDAN
TrueDAN
OP
11
[QUOTE="TheMathsMan;65872230"]
Original post by TheMathsMan
w = 11 because they tell you the float is 1 so 17 - w - 5 = 1 therefore w = 17-5-1 which is 11
z = 4 because that was the shortest going back when the early was 3 ..
y = 17
x = 22
so you got 2 out of the 4 right ...

I had X as well bro - 22 was always in there. I'm usually good with float so I think I got 11. At least 3/4
(edited 7 years ago)
I didn't do too bad ... but I mucked up on a few ... like the linear programming .. I put y + 3/2x whereas you'all are saying 3/2y + x which makes more sense ... I was rushing and I don't read properly when I'm rushing .. that resulted in me losing a further 5 marks from the next few questions ... then I lost 3 marks for leaving the 2nd gannt chart ... then I lost about 1 mark for not answering the second part to the flowchart question ... I answered the which one should be x but not the one after that. I lost 2 more marks because of a stupid mistake I made that I don't want to share ;-P so that leaves ... 64/75 which is me being generous so I'd say I got 60 which I'm satisfied with unless the examiners are complete ass holes and they mark incredibly harshly like they did for my AS's
Original post by frances98
Im pretty sure it was 12



It think it was11. Because D had a float of 1. Therefore, it was 17-?-5=1

.............which gives 11.
[QUOTE="TheMathsMan;65872230"]
Original post by TheMathsMan
w = 11 because they tell you the float is 1 so 17 - w - 5 = 1 therefore w = 17-5-1 which is 11
z = 4 because that was the shortest going back when the early was 3 ..
y = 17
x = 22
so you got 2 out of the 4 right ...


Exactly what I got
Reply 45
Avatar for FugFig
FugFig
5
How many critical activities? 4? And which?
What was the route length for the first part of chinese postman?
Original post by FugFig
How many critical activities? 4? And which?


Yeah I had 4 critical values .. sure about that being correct :smile:
Reply 48
Avatar for adso222
adso222
4
Original post by Nikhilm
Anyone remember a 459?

Posted from TSR Mobile


Yeah from Chinese postman - people saying it's 460 though :/
Original post by adso222
Yeah from Chinese postman - people saying it's 460 though :/


Yeah idk what the answer is...anyone else get 459?
Reply 50
Avatar for TrueDAN
TrueDAN
OP
11
Original post by TheMathsMan
I didn't do too bad ... but I mucked up on a few ... like the linear programming .. I put y + 3/2x whereas you'all are saying 3/2y + x which makes more sense ... I was rushing and I don't read properly when I'm rushing .. that resulted in me losing a further 5 marks from the next few questions ... then I lost 3 marks for leaving the 2nd gannt chart ... then I lost about 1 mark for not answering the second part to the flowchart question ... I answered the which one should be x but not the one after that. I lost 2 more marks because of a stupid mistake I made that I don't want to share ;-P so that leaves ... 64/75 which is me being generous so I'd say I got 60 which I'm satisfied with unless the examiners are complete ass holes and they mark incredibly harshly like they did for my AS's

I messed up on bin packing FFS! Harshly 1/5
Algorithm I don't think the answer is about it going negative - it's about it always being odd - of so that's another 2.
Prim's I rushed like mad so harshly 1/4
Probably dropped marks on the network 2/5 harsh as possible.
Question 7: blergh probably 8 marks harshly.
Question 8 : 7 harshly
Absolute minimum is around 50. Hopefully error carried forward and methods mean I could scrape 60. Averaging that out so realistically 55-57. Damn
I swear it's physically impossible to finish that d1 paper in time
Reply 52
Avatar for anna096
anna096
1
Original post by ellie.12
I think you got the points wrong for -x+24y=24 i got points (0,1) (24,2) not sure if this is right but gave me a final answer of 11 and 4


This is what I got!
Original post by Nikhilm
Yeah idk what the answer is...anyone else get 459?


People on the SR can be wrong .. I would tell you the correct answer but I don't remember my own after suffering a major headache after looking at the brain **** that was this paper .. If you remember the weight of the network for route inspection then I can tell you.
Original post by TheMathsMan
Yeah I had 4 critical values .. sure about that being correct :smile:


Was there a question asking to state how many?
Original post by TheMathsMan
People on the SR can be wrong .. I would tell you the correct answer but I don't remember my own after suffering a major headache after looking at the brain **** that was this paper .. If you remember the weight of the network for route inspection then I can tell you.

The weight was 384 and I remember getting a 75 which totalled 459. Then for the second i used 35 to get 419
Original post by Nikhilm
Yeah idk what the answer is...anyone else get 459?


I got 459.
Original post by lucabrasi98
Was there a question asking to state how many?


No but you needed to know them for the gannt chart :smile:
Original post by Nikhilm
The weight was 384 and I remember getting a 75 which totalled 459. Then for the second i used 35 to get 419


Oh yeah .. I remember .. that is absolutely correct :smile: I'm sure of it
Reply 59
Avatar for TrueDAN
TrueDAN
OP
11
Original post by Nikhilm
The weight was 384 and I remember getting a 75 which totalled 459. Then for the second i used 35 to get 419

That is correct! :smile:

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