Rates, SM-Bank 030

Betty works part time in a clothing shop.

On weekends, she earns 2 times as much per hour as she earns on weekdays.

One week, she works 15 hours on weekdays and 3 hours on the weekend.

Her pay for the week was $367.50.

How much does she earn in 1 hour on a weekday? (2 marks)

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$$17.50/\text{hour}$

Show Worked Solution

$\text{Pay hours}$	$= 15+3\times 2$
	$=21$

$\text{Earnings for 1 hour}$	$=\dfrac{367.50}{21}$
	$=$17.50$

$\therefore \text{Betty earns}\ $17.50\ \text{in 1 hour.}$

\(\text{Pay hours}\)	\(= 15+3\times 2\)
	\(=21\)

\(\text{Earnings for 1 hour}\)	\(=\dfrac{367.50}{21}\)
	\(=$17.50\)