Question 3 (Suggested maximum time: 15 minutes)
(a)
A courier company delivers two sizes of boxes.
Large boxes weigh 5.6 kg and small boxes weigh 4 kg.
On one particular day, the company deliver 25 boxes.
Their total weight is 133.6 kg.
(0)
If the number of 5.6 kg boxes delivered is x and the number of 4 kg boxes delivered
is y, form two equations in terms of x and y to represent the above information.