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Mathematics

Grade 9

Numbers

Module 5

Money matters

Money matters

CLASS WORK

  • Few people don’t deal with money practically every day. We will look at a few important financial principles.

1 Someone who starts a business, does it so that he can earn money for buying food, paying his water and power accounts, and paying for his other needs. Making money out of a business means that you have to get more money in from the business than you pay out to keep the business running. So, he makes a profit when his income is bigger than his expenses . If the expenses are more than the income, then he shows a loss . Another way of putting it is to look at gross income and net income . Gross income is the same as income above, namely all the money the business receives. Net income is what is left after you have subtracted expenses from the income. When income is more than expenses, net income is positive (a profit), but when income is less than expenses, net income is negative – i.e. a loss.

1.1 Calculate the profit or loss of the following businesses:

1.1.1 Income: R 36 000, R1 250 and R9 500; Expenses: R49 000

1.1.2 Expenses: R120 560; R15 030 and R55 250; Expenses: R85 000; R95 000 and R63 550

1.1.3 Patsy sells dried fruit and sweets from her stall in a large shopping centre. In March she paid R150 for the stall and R850 for the floor area in the centre. She sold dried fruit to the value of R1 500. In March she paid R250 to an assistant who relieves her two afternoons. She also made R2 840 on the sweets she sold in March. In April her expenses for renting the stall stayed the same, but she had to pay R50 more for the floor space. Her purchases of dried fruit and sweets during March and April cost her a total of R5 500. Her assistant earned R280 in April. Patsy’s phone account came to R860 for March and April. In April she sold dried fruit to the value of R1 370 and sweets for R2 550. Her packaging material for the two months came to R420. Did Patsy show a profit, or a loss for these two months? Show your calculations neatly.

2 All families have certain expenses that have to be paid. To do this, there must be an income – someone has to have a profitable business, or a job for which he or she receives a wage or a salary. To ensure that the important expenses are covered, most families budget . It is very easy. At the start of the month, you write down all the expected expenses for that month in order of importance. If all the critical expenses are less than the expected income for the month, then you have to decide what could be done with the rest: will a part of it be saved, or will all of it be spent? In this way you can avoid spending all your money on movies and parties, leaving nothing for the phone account! For example, the Jacobs family are expecting the following monthly expenses: R160 for municipal services, R240 for the telephone, R2 800 for groceries, R1 300 for a bond payment, R650 for the hire purchase payment on their car, R250 pocket money for the children, R150 school fees, R340 for petrol and R200 to save for a holiday. Mr and Mrs Jacobs together earn R8 200 per month.

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Mathematics grade 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11056/1.1
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