VCE General & Further Maths Question Thread!

[AngelWings]

HOW do i do correction for seasonality?
QUESTION was - the seasonal index for sales in winter is 0.75
To correct seasonality, the actual sales in winter should be
a)increased by 25%
b) reduced by 25%
c)reduced by 33%
d)increased by 33%

I have no idea how to do it and thought it was c, but the answer is D

This type of question always comes up once in a while. It came up in 2014. I remember sitting this exam with this one in my reference book. I've previously done a 2011 one which was awfully similar too. (If that gap is accurate, it's due for a come back but before that it hadn't been around for years, so... who knows?) Here's how to do it:

Spoiler

What you want is a seasonal index of 1.
The seasonal index for winter given is 0.75.
Grab 1/ 0.75 = 1.33 (approx.)
This is 133%, so find the difference between that and 100%. Note that 133% is higher than 100% (thus an increase).
This gives an increase of 33%.

Hope that helps!

[hmdeadas]

RECURSION/FINANCIAL -  Can someone please explain why the answer is C.
I knew it was either C or D but had no idea how i can tell between unit cost and flat rate with such little information!
THANKS

[AngelWings]

RECURSION/FINANCIAL -  Can someone please explain why the answer is C.
I knew it was either C or D but had no idea how i can tell between unit cost and flat rate with such little information!
THANKS

Not too sure, but upon my 5 seconds of research, I found the difference to be the definition of each, so maybe that's something to check with your notes or textbook. C just seemed to suit the situation more. Also, maybe the use of V₀ over V₁? But I wouldn't have any idea about that. Haven't looked into financial recursions much.

[hmdeadas]

Not too sure, but upon my 5 seconds of research, I found the difference to be the definition of each, so maybe that's something to check with your notes or textbook. C just seemed to suit the situation more. Also, maybe the use of V₀ over V₁? But I wouldn't have any idea about that. Haven't looked into financial recursions much.

Thank you soo much for answering both my questons! Correcting seasonal index explanation made perfect sense (feeling much confident)!
Yeah i believed C was correct, their is no difference in the recurrence relation of unit-cost and flat-rate so proably a poor question! Thank alot anyways!

[hmdeadas]

RECURSION / FINANCE  -Can someone please explain to me how to get the answer?
The solutions said that the monthly interest rate would be 7.2% / 1200....why 1200??

[darcypeaceee]

RECURSION / FINANCE  -Can someone please explain to me how to get the answer?
The solutions said that the monthly interest rate would be 7.2% / 1200....why 1200??

I'm not 100% sure if I'm correct, but I believe they've combined 12 (compounding monthly) with 100 to get the monthly interest rate.

[Opengangs]

7.2% is the interest rate compounded annually, so to find the interest rate compounded monthly, we need to divide by 12.

So we get (7.2/100)/12 = 7.2/1200

[hmdeadas]

HEY, can someone explain how to get question 8! I got 7 which was E but have no idea how to get question 8
NETWORKS

[hmdeadas]

Recursion - Also how o i solve for this, it said to use finance solver which i did but received the incorrect value :-(
Q. Loan is taken out where there are no repayments until end of year 5
How much extra interest is charged when the compounding period is changed from monthly to daily on a loan of $25000 at 5% per annum?
a) $16.21
b)$96.88
c)$112.75

[darcypeaceee]

Recursion - Also how o i solve for this, it said to use finance solver which i did but received the incorrect value :-(
Q. Loan is taken out where there are no repayments until end of year 5
How much extra interest is charged when the compounding period is changed from monthly to daily on a loan of $25000 at 5% per annum?
a) $16.21
b)$96.88
c)$112.75

If you look on page 129 people were talking about how they might've got the answer wrong. So if you got A I'm pretty sure you're correct!

[BlinkieBill]

HEY, can someone explain how to get question 8! I got 7 which was E but have no idea how to get question 8
NETWORKS

hey you just need to rewrite all the possible paths with e and f and change it up according to the new change. so i think you add 6 hours the F's EST or something. check, im not 100% sure

[hmdeadas]

If you look on page 129 people were talking about how they might've got the answer wrong. So if you got A I'm pretty sure you're correct!

Thank You! Yeah i am not getting A either = :-( , my answer is like in the thousands...

[Gretel99]

Can someone please help with this question from the 2017 Insight paper: (geometry and measurement)
A teacher, located at Torquay (38 S, 144E) releases the results of her exam to all students at the same time.
What time will student Georgia who is in Terang (38 S, 142 E) receive her results if the teacher releases them at 9:30 a.m in Torquay?
a). 9.22 am
b). 9.30 am
c) 9:38 am
d) 10.00 am
e) 10:38 am

To me the answer should be A as Torquay is further east than Terang and would therefore be ahead in time, but the answer is C?
Am i reading this wrong?

Thankyou!

[mammes]

HEY, can someone explain how to get question 8! I got 7 which was E but have no idea how to get question 8
NETWORKS

Spoiler

Redraw the network with E going straight up with D.

What should happen is the critical path which was ACDFH = 27 becomes ACEFG = 29

The answer should be delayed by 2 hrs.

[mammes]