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Duncanrig Secondary School – Mathematics Department
S5 National 5 Lifeskills Homework Exercise 5
1. Here are two fair spinners. The total score is the sum of the two numbers the arrows
point to.
All the possible outcomes for the two spinners are, systematically, noted down.
The table of results, are shown.
Triangular spinner
1
1
1
1
2
2
2
2
3
3
3
3
Square spinner
0
1
2
3
0
1
2
3
0
1
2
3
Total score
1
2
3
4
2
3
4
5
3
4
5
6
Use the table to answer these questions:
a)How many different possible outcomes are there?
b)How many outcomes gave a total score of 2?
c)What is the probability of getting a total score of 2?
d)How many outcomes gave a total score of 4?
e)What is the probability of getting a total score of 4?
2. The pie chart below shows the heights (in cm) of 30 pupils in a class.
How many pupils are between 121-130cm tall?
3. A table of exchange rates is shown below.
Country
Australia
European countries
Switzerland
South Africa
Turkey
USA
Exchange rate for pound sterling
2.82 Australian dollars
1.58 euros
2.32 Swiss francs
16.34 rand
2520000 New Turkish lira
1.55 US dollars
a) Tim is going to Germany for his holidays. He saves £150 of his pocket money.
How many Euros will he get?
b) James is going on holiday to America.
He has £500 spending money which he exchanges to dollars at the bank.
The bank also charges a commission of 5% on any transactions.
How many dollars will James receive?