Revision - BOMDAS, Rates, Ratios, Best buys and Percentages

An airfare of $7000 is discounted 40% if you fly off-peak. What would be the price of the ticket after the discount?

• 4200

• 4800

• 2800

• 3500

12 ÷ (4 × 3) + 2

• 11

• 2

• 3

• 1/2

-2 × (3 - 8)

• -10

• 10

• -14

• 2

As a percentage, 

 $\frac{21}{60}$  is: 

• 60%

• 21%

• 35%

• 12.6%

An iPod is discounted by 26%. What is the price if it was originally $56?

• $41.44

• $14.56

• $35.22

• $26.56

Determine the best buy:

0.7 GB of internet usage for $14 or 1.5 GB for $30.90 with

different service providers

• 0.70 GB

• 1.5 GB

If 24 golf balls cost $86.40, how much do 7 golf balls cost?

• $15

• $25.20

• $35

• $47.20

Two different brands of kitchen plastic wrap are sold in a shop.

Brand A contains 50 metres of plastic wrap and costs $4.48

Brand B contains 90 metres of plastic wrap and costs $5.94

Which brand is the better value?

• Brand A

• Brand B

A box of chocolates contains hard-centred and soft-centred chocolates in the ratio 5 : 2. If there are 49 chocolates in the box, how many chocolates are hard-centred?

• 35

• 14

• 21

• 28

Choose the correct answer. A mixed baseball team has 4 boys and 8 girls. The simplest ratio of girls to team members is:

• 3 : 2

• 4 : 8

• 2 : 3

• 8 : 4