How to solve below question ???

A supermarket is selling three different fruits, i.e. apple, orange and pear. The price of an apple is RMx, the price of an orange is twice of an apple, and the price of a pear is RMy. Two different stalls, stall A and stall B get their supplies from this supermarket. Stall A bought 350 apples, 200 oranges and 300 pears and pays RM 680. Stall B bought 400 apples, 150 oranges and 250 pears and pays RM 530.

i) Based on the above information, form a system of linear equations.

ii) Write the above linear equations in the form of a matrix equation.