VCE General & Further Maths Question Thread!

[nicholas9027]

Hey guys can you give me tips to help tackle these question pls
Chris borrows $100000 at 8% compounding monthly, to be paid over 10 years with repayments of $1213.28 each month. After 5 years, the interest rate is reduced to 7.5%pa. (i dont know what to do for the After 5 years interest rate change)
a)Find the new repayment required for Chris to pay off loan in the same amount of time.
b)How much money does Chris save due to the interest rate cut?
the answers
a) $1199
b)$856.80

[nicholas9027]

pls help^ im stuck

[MAGGOT]

Hey guys can you give me tips to help tackle these question pls
Chris borrows $100000 at 8% compounding monthly, to be paid over 10 years with repayments of $1213.28 each month. After 5 years, the interest rate is reduced to 7.5%pa. (i dont know what to do for the After 5 years interest rate change)
a)Find the new repayment required for Chris to pay off loan in the same amount of time.
b)How much money does Chris save due to the interest rate cut?
the answers
a) $1199
b)$856.80

a)
1] First you need to find the future value after 5 years
n=5*12, 1=8, pv= 100,000, pmt= -1213.28, ppy=12
Solve for Fv
Fv= -59836.57

2] Then solve the new payments if the loan is payed off
n=60, i=7.5, pv= -fv <- previous fv but positive, fv=0, ppy=12
Solve for pmt
pmt= $1199.00

b)
1] You need to find the total amount paid for both types of options using:
           Number of payments x Payment amount
Using 8%
60 x 1199 = 72796.80
using 7.5%
60 x  1213.28 = 71940

2] Find the difference between the 2 numbers
72796.80 - 71940 = $856.80

[Lear]

How relevant are some of the extremely old exams from 2006-2015 to the new 16-18 study design? Should these earlier practice exams be done in timed conditions despite having a slightly different lay out of topics? Or would it be better to simply focus on the last two year's exams and other company trial exams that have been released following the study design change.

[cdiamond]

How relevant are some of the extremely old exams from 2006-2015 to the new 16-18 study design? Should these earlier practice exams be done in timed conditions despite having a slightly different lay out of topics? Or would it be better to simply focus on the last two year's exams and other company trial exams that have been released following the study design change.

Hi Lear. First of all, the extremely old exams can still be used because all the main topics are still there - the core will be data analysis, and the other two modules will still be relevant, regarding financial, it is still tested as 'Business Related Mathematics' in these paper, and therefore you can still use them under timed conditions. However, do note that there will be slightly fewer questions if you are practicing using the older papers, therefore you should finish with lots of time to spare. I do recommend going through the older practice exams if you need practice, preferably the much later ones e.g. 2013-2015, but do remember that practicing the 2016 and 2017 exam papers are priority because you do need to get used to the questions asked in terms of Financial and Recursion Modelling [there will be more working out for this compared to Business Related Mathematics]. Company Trial Exams that have been released following the study design change is also a good way to practice. In summary, you can still use the older exam papers to practice and practicing is important so try to do as many papers and get as much practice in as possible. Good luck

[secretweapon]

Is it worth doing checkpoints at this stage of the year as they spoil vcaa exams?

[Bri MT]

Is it worth doing checkpoints at this stage of the year as they spoil vcaa exams?

Is it worth doing checkpoints at this stage of the year as they spoil vcaa exams?

Imo getting the practice in early is significantly more valuable than any negatives of spoiling, with the exception of leaving the most recent VCAA exam until the end of the year, especially for maths

[galaxy21]

Hi.
Just wondering...does anybody know whether it is critical to know the process of Dijkstra's algorithm? Is there likely to be a question on the exams that ask for us to go through the process of finding an answer using the algorithm and we will lose marks if we dont?
If not, I won't waste time trying to get a thorough understanding of it, but if it is...well...I'm probably gonna have to try

[lemonlemonlemon]

Hi.
Just wondering...does anybody know whether it is critical to know the process of Dijkstra's algorithm? Is there likely to be a question on the exams that ask for us to go through the process of finding an answer using the algorithm and we will lose marks if we dont?
If not, I won't waste time trying to get a thorough understanding of it, but if it is...well...I'm probably gonna have to try

It is included in the study design so I'll learn it just to be safe, it doesn't take much time.

[Aaron]

If it's in the study design, it is examinable so it is worth looking at it and including it in your bound reference just to be sure.

Then again, if it is in the latest study design, your teacher should have gone over it. If it has been missed, i'd be raising it with your teacher.

[msminzy]

can anyone help me with cuts in networks? It's really confusing me as I'm not sure how to find the maximum amount of cuts when calulcating flow and stuff (basically how do I know I'm not missing important cuts???)

[Lear]

How many marks can one afford to drop across both Exam 1 and 2 combined for a 50?
Assuming 100% SACs of course.

[vceme]

How many marks can one afford to drop across both Exam 1 and 2 combined for a 50?
Assuming 100% SACs of course.

Would like to know this too! Would someone who is rank 2-3 be able to get a 50? given that rank 1,2,3 only differ by a a few marks.

[VeryJuicyLemon]

Would like to know this too! Would someone who is rank 2-3 be able to get a 50? given that rank 1,2,3 only differ by a a few marks.

It's possible. For example if rank 1 score 100% in exams, then rank 2 lost 1-2 mark on Exam 2.
Generally both will get 50.

BUT, if the 2nd highest exam score was for example 90%, then the 2nd ranked, even if achieving 100% in his/her exams may end up with 49 or lower (Since if you're 2nd ranked, you'll use the 2nd highest exam score to moderate your sac score, this is also why being first is beneficial)

[VeryJuicyLemon]

How many marks can one afford to drop across both Exam 1 and 2 combined for a 50?
Assuming 100% SACs of course.

A safe bet is
Exam 1: 40/40

Exam 2: 58-59/60

Just don't lose a mark in the 1st exam, cause it will hurt more than losing a mark in the 2nd exam. Though it's not uncommon to get 50 if you lost 1 mark on Exam 1 and score full marks on the 2nd.