Rates
A plumber charges $60 per hour. How much will 3 hours of work cost?
$180
The ratio of red to blue marbles is 2:3. If there are 10 marbles in total, how many are red?
4
What is 10% of $80?
$8
A $50 shirt is discounted by 20%. What is the discount amount?
$10
A store buys a hat for $10 and sells it for $15. What is the mark-up amount?
$5
A car travels 240 km in 3 hours. What is its average speed?
80 km/h
A recipe uses a ratio of 1:4 for syrup to water. If you use 8 cups of water, how much syrup is needed?
2 cups
What is 25% of $60?
$15
A $120 pair of shoes is discounted by 25%. What is the sale price?
$90
A shop buys a bag for $40 and adds a 25% mark-up. What is the selling price?
$50
A babysitter earns $45 for 2 hours of work. What is the hourly rate?
$22.50 per hour
The ratio of boys to girls in a class is 3:5. There are 24 students. How many are boys?
9
What is 15% of $200?
$30
A $200 TV is discounted by 15%. What is the new price?
$170
A store buys shoes for $60 and adds a 30% mark-up. What is the selling price?
$78
A mechanic charges $80 call-out fee plus $35 per hour. How much will 4 hours of work cost?
$220
(80 + 35×4)
The ratio of cats to dogs in a shelter is 7:3. There are 40 animals in total. How many are dogs?
12
A jacket costs $120. GST is 10%. What is the total price including GST?
$132
A $80 item has a 30% discount. What is the final price?
$56
A café buys coffee beans for $20 and sells them for $28. What is the percentage mark-up?
40%
Taxi A charges $3 per km. Taxi B charges $12 base fare plus $2 per km. For a 10 km trip, which taxi is cheaper?
Taxi A = $30
Taxi B = $32 → Actually Taxi A is cheaper
Correct answer: Taxi A
A map scale is 1:50,000. What real distance does 3 cm represent?
1.5 km
(3 × 50,000 cm = 150,000 cm = 1500 m = 1.5 km)
A student scored 42 out of 50 on a test. What percentage is this?
84%
A $250 bike has a 20% discount and then an extra 10% off the discounted price. What is the final price?
$180
(250 → 200 → 180)
A shop buys a jacket for $80 and sells it for $120. What is the percentage mark-up?
50%