Aussie Maths & Science Teachers: Save your time with SmarterEd
Alex used a cloud storage service for one month.
The plan has a base monthly cost of $25. The service also charges 45 cents per GB uploaded and 12 cents per GB downloaded.
During the month, Alex uploaded 180 GB and downloaded 350 GB.
What was the total bill for the month? (2 marks)
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Parking in a city car park is charged at the rate of $3.40 per 20 minutes, or part thereof.
What is the cost of parking for 1 hour and 8 minutes?
A brand of cereal is sold in two different boxes.
What is the difference in the price per kilogram of these two boxes?
Maya’s hybrid uses fuel at the rate of 7.4 L per 100 km for highway driving and 10.2 L per 100 km for urban driving.
She drove a total of 720 km, of which 120 km were urban driving.
Approximately how much fuel did Maya’s car use on the journey?
The concentration of an iron supplement is 250 mg / 5 mL. A patient is prescribed 1500 mg of the supplement.
How much medication should be given to the patient?
A child who weighs 22 kg needs to be given 12 mg of medicine for every 2 kg of body weight.
Every 10 mL of this medicine contains 150 mg.
What is the correct dosage for the child?
Rice is sold in four different sized packets. Which is the best buy?
An old air conditioner uses 2.8 kW of electricity per hour. A new air conditioner uses 1.2 kW per hour. How much electricity is saved each year if the air conditioner runs for 5 hours per day for 200 days using the new model?
An old dishwasher uses 45 L of water per cycle. A new dishwasher uses 15 L per cycle. How much water is saved each year if three cycles are run each week using the new dishwasher?
