smc-900-70-% increase/decrease

Number, NAP-K3-NC08 SA

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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`$2\ 241\ 000`

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`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%)`

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`text(25%)`

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`text(Discount)`	`= text(reduction)/text(original price) xx 100`
	`= ((220 – 165))/220 xx 100`
	`= 25text(%)`

What is $15 as a percentage of $60?

`text(6%)`	`text(15%)`	`text(25%)`	`text(60%)`

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`text(25%)`

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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?

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`$18`

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`text(Solution 1)`

`:.\ 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`

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?

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`$17.55`

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`text(10% discount)`	`= 19.50/10`
	`= $1.95`

`:.\ text(Sale price)`	`= $19.50 – $1.95`
	`= $17.55`