Percentages, SM-Bank 023

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? (2 marks)

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$$18$

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$\text{Solution 1}$

$\text{Sale price}$

$= 30-(25\%\times 30)30-7.50= $22.50$

$\therefore\ \text{Final cost}$	$= 22.50-(20\%\times 22.50=22.50-4.50)$
	$= $18$

$\text{Solution 2 (Advanced)}$

$\text{Final cost}$

$= 30\times 0.75\times 0.8= $18$

\(\therefore\ \text{Final cost}\)	\(= 22.50-(20\%\times 22.50=22.50-4.50)\)
	\(= $18\)