Consumer Arithmetic - AUD 11GeneralMathematics

The unit cost (per gram) of a 120 gram tube of toothpaste sold for $3.70 is:

• $32.43

• $0.03

• $0.44

• $0.05

A 1.25 L bottle of soft drink costs $1.25. With the annual inflation rate over the next 4 years expected to be 4%, the bottle will cost:

• $1.54

• $6.00

• $1.75

• $1.46

If the price of petrol increased from 118.4 cents to 130.9 cents, the percentage change is:

• 10.6%

• 9.5%

• 90%

• 1.1%

MC A basketball ring is sold for $28.50. If this represents a 24% reduction from the recommended retail price (RRP), the original price was:

• $90.25

• $118.75

• $52.50

• $37.50

MC David buys a skateboard online for US$190. If the exchange rate is A$1 for US$0.7574, calculate how much he pays in Australian dollars, to the nearest cent.

• $143.90

• $250.85

• $190

• $250.86

A jewellery salesperson earns 12% commission on all sales. If she sold two rings, one valued at $400 and the other at $280, which of the following could not be used to evaluate her commission?

Natasha is picking apples on a farm. She is paid $6.50 per basket plus a bonus of $1.80 for every basket after the first ten. Calculate how much she will be paid on the day when she picks 16 baskets of apples.

• $105.80

• $75.80

• $114.80

• $128.80

• a friendship ring, normally $104

• a mother of pearl ring, normally $130

• a sapphire ring, normally $260

• a Russian band ring, normally $117

Michael earns a retainer of $220 per week plus 7.5% commission on all sales. The total of Michael’s sales during the week when he earned $448.50 was:

• $6513.33

• $8913.33

• $3420

• $3046.67

Stan is paid $13.20 per hour for the first 40 hours, time-and-a-half for a further 3 hours and double time thereafter. If last week Stan worked 10 hours overtime, his total earning for the week were:

• $770

• $677.60

• $772.20

• $707.20