# General Thoughts: General Mathematics (1 Viewer)

#### luke de celis

##### New Member
Question 19 from multiple choice was hard to comprehend considering the possible answers provided. The question asked us to calculate the total pay a mechanic receives when he works 40 hours @ \$22.35/hour, plus a special allowance of 150/week and double time for 'emergency hours'. However, it states that he only receives the double time when he works for a minimum of 4 hours. It states that he works for 5 hours on one emergency occasion and 1.5 on another thus the double time on 1.5 would not be counted,Thus, many people were getting the answer '1267.5' however it was not provided in the options. I would like to know how people found the real answer
yeh i didnt like this one, but i thought it said, gets a minimum payment of 4hours every call and i think it worked out :s

#### littlemonster24

##### Member
This is exactly how I felt! For someone who didn't study that much, I found it surprisingly easy, which I suppose will bring down my mark because I'm expecting a mark of between 75-80, and if everyone else does well, I'll be scaled down badly. Funfunfun. Oh well. At the end of the day, it's just a bunch of exams, and really, compared to everything else you have in your life, and what you're gonna have, the HSC is really nothing. There are so many more exciting and fascinating things in life, in one's future, and a whole year of our life is wasted away to what'll be a few numbers on a piece of paper when we get our results back.
+1 I agree too!

+ 1

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#### FallopianTubez

##### New Member
1.c
2.c
3.c
4.c
5.c
6.c
7.c
8.c
9.c
10.c
11.c
12.c
13.c
14.c
15.c
16.c
17.c
18.c
19.c
20.c
21.c
22.c
Cheers dude, real funny. Suck me left

#### chauchihuahua

##### New Member
Not saying that I am right, but this is what I did:
22.35 * 40 gives a total of \$894 per week.
He gets \$150 for a call out.
The total number of hours of the call out are 5+1.5 = 6.5
6.5 * 44.70 (which is the double time rate)= 290.55

So, 894+150+290.55 = \$1334.55 which was (c)

Hope that helps! (Hope it's right, haha!) God Bless!
I remember this question and its from the Preliminary Financial Maths syllabus.
With this question, i believe this person is a mechanic who can only work 40 hours a week. The emergency call out is when he needs to perform the work as a priority (like get the work done quicker) so he gets paid more for the "urgent" work he needs to carry out.
I believe he cannot possibly stay another 6.5 hours over 40 hours as he will probably be exhausted idk.

I calculated:
40 hours - 6.5 emergency work hours = 33.5 hours normal pay times by \$22.35 p/h = \$748.725 (normal pay)

6.5 emergency hours double pay times by \$44.70 p/h = \$290.55 (double pay)

33.5 hours + 6.5 hours = 40 hours in total.

Add \$150 allowance for emergency call out

Therefore, \$748.725 + \$290.55 + \$150.00 = \$1189.28 (a) - i think it was.

I could be wrong but i don't know.

#### chauchihuahua

##### New Member
Question 19 from multiple choice was hard to comprehend considering the possible answers provided. The question asked us to calculate the total pay a mechanic receives when he works 40 hours @ \$22.35/hour, plus a special allowance of 150/week and double time for 'emergency hours'. However, it states that he only receives the double time when he works for a minimum of 4 hours. It states that he works for 5 hours on one emergency occasion and 1.5 on another thus the double time on 1.5 would not be counted,Thus, many people were getting the answer '1267.5' however it was not provided in the options. I would like to know how people found the real answer
I remember this question and its from the Preliminary Financial Maths syllabus.
With this question, i believe this person is a mechanic who can only work 40 hours a week. The emergency call out is when he needs to perform the work as a priority (like get the work done quicker) so he gets paid more for the "urgent" work he needs to carry out.
I believe he cannot possibly stay another 6.5 hours over 40 hours as he will probably be exhausted idk.

I calculated:
40 hours - 6.5 emergency work hours = 33.5 hours normal pay times by \$22.35 p/h = \$748.725 (normal pay)

6.5 emergency hours double pay times by \$44.70 p/h = \$290.55 (double pay)

33.5 hours + 6.5 hours = 40 hours in total.

Add \$150 allowance for emergency call out

Therefore, \$748.725 + \$290.55 + \$150.00 = \$1189.28 (a) - i think it was.

I could be wrong but i don't know.

#### Jack Cody

##### New Member
For question 20, and correct me if I'm wrong, but is the answer not a?
I got A as the income at the breakeven point is \$0. And the income at the 500 people attending point is the income minus the cost which would be \$15000. Thus the difference in income is \$15000. Or did I interpret the question incorrectly?
I got the same

#### dydx

##### Member
People over here had trouble remembering how many minutes were in a degree

Serious shit's going down LOL.

By the looks of it mainly problem solving based questions are involved. So unless they have decent English skills and cutting away the fat to get @ the meat of a Q they've got no chance.

But for 2U+ it would be pretty easy; no Calculus
STFU RAAQIM YOU SHIT CUNT 24/120 for trials and 6/40 for half yearly.

#### electricckid

##### New Member
could someone tell me how many i got correct??

1.D
2.A
3.B
4.C
5.B
6.D
7.B
8.D
9.C
10.A
11.B
12.B (had no idea how to do this)
13.A
14.B
15.B
16.D
17.C
18.A
19.D
20.C
21.B (Didnt know how to do this one either)
22.A

Would be heaps appreciated if someone could let me know

#### joezia

##### Member
i think i fucked up badly, what would a raw mark of 65 align to?

#### miss_forgettful

##### New Member
could someone tell me how many i got correct??

1.D
2.A
3.B
4.C
5.B
6.D
7.B
8.D
9.C
10.A
11.B
12.B (had no idea how to do this)
13.A
14.B
15.B
16.D
17.C
18.A
19.D
20.C
21.B (Didnt know how to do this one either)
22.A

Would be heaps appreciated if someone could let me know
Question 10 is actually C. \$2100 * (19.74/100/365) * 39 days = \$2144.29
Question 12 is actually A. You flip the 2y/5 around so it's now 5/2y. Then you change the division sign to a multiplication sign. Now just multiply the fractions together like normal and then simplify.
Question 21 is actually A. You have to find the distance between town A and town B. Remember that Distance/Speed/Time triangle? Find the distance using the stats from Train 1. D = S * T = 90 * 2 = 180km. Now that you have the distance, you can work out the speed of train 2. S = D / T = 180 / 80 minutes. But you have to convert 80 minutes to hours because it's km/h. So 80/60 = 1.3333.... 180 / 1.33.. = 135 km/h

So you got 19/22 congrats ^^

#### miss_forgettful

##### New Member
Does anyone know Question 26 c) ??
"Furniture priced at 20 000 is purchased. Deposit of 15% is paid. The balance is borrowed using a FLAT-RATE LOAN at 19% per annum interest, to be repaid in equal monthly instalments over five years. What will be the amount of each monthly instalment?

So is this annuities and you had to find M? But the formulas include compound interest but this is flat rate... help!

#### 2011_

##### Member
Question 10 is actually C. \$2100 * (19.74/100/365) * 39 days = \$2144.29
Question 12 is actually A. You flip the 2y/5 around so it's now 5/2y. Then you change the division sign to a multiplication sign. Now just multiply the fractions together like normal and then simplify.
Question 21 is actually A. You have to find the distance between town A and town B. Remember that Distance/Speed/Time triangle? Find the distance using the stats from Train 1. D = S * T = 90 * 2 = 180km. Now that you have the distance, you can work out the speed of train 2. S = D / T = 180 / 80 minutes. But you have to convert 80 minutes to hours because it's km/h. So 80/60 = 1.3333.... 180 / 1.33.. = 135 km/h

So you got 19/22 congrats ^^
Agreed. Well done on 19 / 22

#### 2011_

##### Member
Does anyone know Question 26 c) ??
"Furniture priced at 20 000 is purchased. Deposit of 15% is paid. The balance is borrowed using a FLAT-RATE LOAN at 19% per annum interest, to be repaid in equal monthly instalments over five years. What will be the amount of each monthly instalment?

So is this annuities and you had to find M? But the formulas include compound interest but this is flat rate... help!
I can't remember exactly. I think I may have used I = Prn (simple interest formula), then calculated total amount to be repaid (Principal + Interest) then divided that by n number of periods. That may be wrong, I'm not even 100% sure it is what I did on the day - can't remember

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#### miss_forgettful

##### New Member
I can't remember exactly. I think I may have used I = Prn (simple interest formula), then calculated total amount to be repaid (Principal + Interest) then divided that by n number of periods. That may be wrong, I'm not even 100% sure it is what I did on the day - can't remember
Damn! Yeah I'm pretty sure that's right... >.<

#### 2011_

##### Member
I can't remember exactly. I think I may have used I = Prn (simple interest formula), then calculated total amount to be repaid (Principal + Interest) then divided that by n number of periods. That may be wrong, I'm not even 100% sure it is what I did on the day - can't remember
I'm hoping that is right.

#### A-Nonentity

##### Member
I stuffed up financial and bearings because of a mind blank, other then thattttt I think It was pretty fair.