Rates
A car travels 180 km in 3 hours. What is its average speed in km/h?
60km/h
The ratio of boys to girls in a class is 3:5. What fraction of the class are boys?
3/8
What is 25% of $80?
$20
A $50 shirt is on sale for 20% off. How much is the discount?
Convert 1000 watts to kilowatts.
1kW
A tap fills 24 litres in 6 minutes. What is the rate of water flow in litres per minute?
4L/min
A recipe uses flour and sugar in the ratio 4:1. If you use 200 g of flour, how much sugar is needed?
50g
What is 15% of $200?
$30
A $120 jacket has a 25% discount. What is the sale price?
$90
Convert 3500 joules to kilojoules.
3.5kJ
A worker earns $135 for 5 hours of work. What is their hourly rate?
$27 per hour
The ratio of red to blue marbles is 2:7. If there are 18 marbles total, how many are red?
4
A test score is 36 out of 45. What percentage is this?
80%
A store buys a product for $40 and adds a 30% markup. What is the selling price?
$52
A device uses 2000 watts. How many kilowatts is this?
2kW
A cyclist travels 45 km in 1.5 hours. What is their average speed?
30km/h
The ratio of teachers to students is 1:12. If there are 180 students, how many teachers are needed?
15 teachers
A phone costs $650. What is 12% GST on this amount?
$78
A laptop costing $900 is discounted by 15%. What is the sale price?
$765
Convert 250 calories to joules.
(1 calorie = 4.2 J)
1050 J
A machine produces 480 items in 8 hours. What is the production rate per minute?
1 item per minute
A drink mix uses cordial and water in the ratio 1:4. How much cordial is needed to make 2.5 L of drink?
0.5 L (500 mL)
A worker receives a 7% pay rise on a salary of $52,000. How much is the increase?
$3,640
A shop buys shoes for $80 and sells them for $120. What is the percentage markup?
50%
If you consume 10146.2 joules of energy a day. How many calories is this? (1 calorie = 4.184 joules)
2425 calories