Michael purchases a 3D printer worth $2 490 000.
He was given a 10% discount.
What was the price paid by Michael after the discount?
$ 
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Michael purchases a 3D printer worth $2 490 000.
He was given a 10% discount.
What was the price paid by Michael after the discount?
$ 
`$2\ 241\ 000`
`text(Discount)`  `= 10text(%) xx 2\ 490\ 000` 
`= 249\ 000` 
`:.\ text(Price)`  `= 2\ 490\ 000  249\ 000` 
`= $2\ 241\ 000` 
A hockey stick is on sale, reduced from $220 to $165.
What percentage discount has been applied?
`text(25%)`  `text(33%)`  `text(45%)`  `text(55%)` 




`text(25%)`
`text(Discount)`  `= text(reduction)/text(original price) xx 100` 
`= ((220  165))/220 xx 100`  
`= 25text(%)` 
Don buys a cricket ball, originally marked $30, that is discounted by 25%.
He also has a loyalty card that gives him another 20% off the sale price.
What is the final cost of the ball?
$ 
`$18`
`text(Solution 1)`
`text(Sale price)`  `= 30  (25text(%) xx 30)` 
`=30  7.50`  
`= $22.50` 
`:.\ text(Final cost)`  `= 22.50  (20text(%) xx 22.50)` 
`= $18` 
`text{Solution 2 (advanced)}`
`text(Final cost)`  `= 30 xx 0.75 xx 0.8 ` 
`= $18` 
`$7.50`
`text(Price of tent 1)`  `= 85  30text(%) xx 85 ` 
`= 85  25.5`  
`= $59.50`  
`text(Price of tent 2)`  `= 80  35text(%) xx 80` 
`= 80  28.0`  
`= $52.00` 
`:.\ text(Price difference)`  `= 59.5  52` 
`= $7.50` 
Walker is doing an intensive swim program over the summer holidays.
In his first session, he swims 50 laps.
In his second session, he swims 30% more laps than his first session.
In his third session, he swims 20% more laps than his second session.
How many laps does he swim at his third practice?
`78\ text(laps)`
`text(1st session) = 50\ text(laps)`
`text(2nd session)`  `= 50 + (30text(%) xx 50)` 
`= 50 + 15`  
`= 65\ text(laps)` 
`text(3rd session)`  `= 65 + (20text(%) xx 65)` 
`= 65 + 13`  
`= 78\ text(laps)` 
Ricky wants to buy a cricket bat that has a normal price of $160.
He is given a 10% discount.
What is the value of the discount?
`$1.60`  `$10`  `$16`  `$150` 




`$16`
`text(Value of the discount)`
`= 10 text(%) xx 160`
`=$16`
A box of golf balls normally cost $19.50.
During a sale, the golf shop took 10% off the regular price of the balls.
What is the new sale price of the golf balls?
$ 
`$17.55`
`text(10% discount)`  `= 19.50/10` 
`= $1.95` 
`:.\ text(Sale price)`  `= $19.50  $1.95` 
`= $17.55` 