Question 1 At the St. George's College bookshop, pens are sold at x dollars and rulers at
y dollars each. A student bought 4 pens and 5 rulers for $24 on Monday. He
then went back on Tuesday and bought 2 of the same pens and 7 of the same
rulers for $21.
i.
ii.
Write two equations in x and y to represent the information given above.
[2 marks]
Solve the equations for x and y.
[4 marks]
Calculate the total cost for one pen and one ruler.
ni.