Answers
QMI1500 Exam May June 2018 Paper 2 Questions and Solutions
- Course
- Institution
QMI1500 Exam May June 2018 Questions and Solutions including workings.
[Show more]
1 review
By: ndyebophillips7 • 3 year ago
Seller
Follow
aj107
Reviews received
Content preview
QMI1500Elementary Quantitative Methods
Department of Decision Sciences
Exam Paper 2 May/June 2018
Question 1
Simplify the following fraction:
8
9
7
15
57
[1] 1
63
19
[2] 1
21
56
[3] 1
135
23
[4] 1
16
Answer:
8 7
÷
9 15
,Apply the division rule:
8 15
×
9 7
Reduce the numbers with the greatest common factor 3:
8 5
×
3 7
Multiply The fractions:
40
21
Convert the improper fraction to a mixed fraction.
40 divided by 21 is 1 with a remainder of (40 − 21 = 19).
19
1
21
NB: Things to remember:
• If you don’t find your answer as one of the options, this means you need to convert your answer
to a manner in which it will be one of the option. Or simplify it further.
• You are allowed to use a programmable pocket calculator (e.g. Casio scientific calculator) which
can save a lot of time on numerical questions such as these.
Question 2
Tumelo bought a cellphone for R3 000. He also bought airtime costing 1% of the cellphone price. At
the pay point the cashier gave him a 20% discount on the total bill. What is the amount that he had
to pay?
[1] R2 370
[2] R2 376
[3] R2 424
[4] R2 640
Answer:
What is this question trying to test?
Percentages and proportions
Cellphone + airtime
𝑅3 000 + 1% 𝑜𝑓 𝑅3 000
𝑅3 000 + 30
𝑅3 030
Discount = 20% 𝑜𝑓 𝑅3 030
= 𝑅606
Amount paid =R3 030-R606
= 𝑅2 424
, Question 3
If a building has eight entrances and sixteen exits (including emergency exits) in how many ways can
a person enter and leave the building?
[1] 2 ways
[2] 128 ways
[3] 12870 ways
[4] 518 918 400 ways
Answer:
What is this question trying to test?
Permutations and combinations.
Think of it this way:
A person can enter in eight ways AND can exit in sixteen ways. Therefore,
8 × 16 = 128 𝑤𝑎𝑦𝑠
Therefore, a person can enter and exit the building in 128 different ways.
Question 4
Determine the value of 𝑥 that satisfies
3 15
=
𝑥 14
21
[1] 1
24
5
[2]
24
4
[3] 4
5
8
[4]
15
Answer:
What is this question trying to test?
Fractions
3 15
=
𝑥 14
72 = 15𝑥
72
𝑥 = 15
4
= 45
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller aj107. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $2.77. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
53022 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now