Edexcel D1 - 17th June, 2016 [Exam discussion]

I got this too, I don't understand how everyone got integer values when the question said EXACT value, ie: don't round off as a decimal, leave as a fraction. EVERY past paper had a fraction when it said this.

Did you equate the 2 equations together to get x and y?

I ran out of time so I couldn't workout £C :frown:

Reply 1081

veldt127

2

Original post by SP98

I'm not fully certain, but don't these values give the optimal number and fit within the enclosed region?

I got 11 and 4; lots of people seem to agree on that. We'll have to wait for someone to post the paper.

Reply 1082

4nonymous

11

Original post by target21859

I ran out of time haha. Oh well. Messed up the scheduling and didn't find a route for the route inspection. What did everyone get for the route inspection? Not the route the numerical answers and arcs to be repeated.

For the first part I got weight of the network + 75
For the 2nd part I did Finish at B and repeat the other arc which was 35 so total length was weight of network + 35

Reply 1083

asho99

Is there a mark scheme?

Reply 1084

4nonymous

11

Original post by MsDanderson

I got this too, I don't understand how everyone got integer values when the question said EXACT value, ie: don't round off as a decimal, leave as a fraction. EVERY past paper had a fraction when it said this.

Did you equate the 2 equations together to get x and y?

I ran out of time so I couldn't workout £C :frown:

No that part did say give the EXACT value like you said, but then it asked for the number of standard/deluxe that should be bought so its common sense to know that these have to be integer values and then you calculate the cost of it

Reply 1085

4nonymous

11

Original post by Harrydickens

Can anyone remember the 3 different lengths of the possible routes in the route inspection problem

I got 75, 85 and 126? (I THINK)

Reply 1086

Waffles15

2

Can someone who knows how make a poll to see how people found this exam

Reply 1087

Maetras

9

Original post by 4nonymous

For the first part I got weight of the network + 75
For the 2nd part I did Finish at B and repeat the other arc which b 35 so total length was weight of network + 35

Yeah that's what I got it but whenever I tried a route I always blocked myself. It was only 1 mark.

Reply 1088

4nonymous

11

For the dikstra. I got 49 for part a but everyone seems to have got 48. How many marks would I lose. And does anyone remember the route for part a.

Reply 1089

CutieTootsie

13

Original post by 4nonymous

No that part did say give the EXACT value like you said, but then it asked for the number of standard/deluxe that should be bought so its common sense to know that these have to be integer values and then you calculate the cost of it

Fair enough! I ran out of time so didn't read what it said looool

Reply 1090

4nonymous

11

Original post by target21859

Yeah that's what I got it but whenever I tried a route I always blocked myself. It was only 1 mark.

The route I got was very long.

Reply 1091

Nuggetsarelife

9

You must've drawn your feasible region wrong then

Reply 1092

iMacJack

16

Original post by target21859

Yeah that's what I got it but whenever I tried a route I always blocked myself. It was only 1 mark.

when it asked for the route and its length i didn't give a route because like you said it kept blocking but I said the length was something + 35 and that's it, 1 mark/2?

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Reply 1093

adzar99

1

Original post by Nikhilm

Just worked out I need a total of 0 ums in this paper. to still get my two a* in maths and f maths..why did I even bother showing up

Well good for ****ing you...

Reply 1094

CutieTootsie

13

Original post by 4nonymous

I got 75, 85 and 126? (I THINK)

Same as you but 125 instead

Reply 1095

4nonymous

11

Original post by boyyo

one of them was x greater than or equal to 8

another was, -X +24y greater than equal to 24

cant remember the others.

Original post by Student403

Do remember there were other constraints aside from the cost one :tongue:

-X +24y greater than equal to 24
x greater than or equal to 2
7x+8y greater than or equal to 112?

Reply 1096

js.int

3

Original post by igotohaggerston

I got 5 workers for the lower bound from my cascade diagram and I scheduled with 3 workers

How did you manage to schedule it using 3 workers? I had to use 4

Reply 1097

Nuggetsarelife

9

Original post by iMacJack

when it asked for the route and its length i didn't give a route because like you said it kept blocking but I said the length was something + 35 and that's it, 1 mark/2?

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I See your the big dog around here, what year you in and what marks you looking at in each module

Reply 1098

iMacJack

16

Original post by Nuggetsarelife

I See your the big dog around here, what year you in and what marks you looking at in each module

Lol.

Year 12, C1 73/75, C2 75/75, S1 70/75, FP1 66/75, D1 63/75, S2 not yet sat. It's not that great.. I didn't like the D1 paper today at all.

How about you mate?

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