A unit of good X is sold for RM2, and a unit of good Y is sold for RM4. Both are complementary goods. When the price of good X increases by RM0.50, the quantity demanded of good Y will change by 25%....

A unit of good X is sold for RM2, and a unit of good Y is sold for RM4. Both are complementary goods. When the price of good X increases by RM0.50, the quantity demanded of good Y will change by 25%. Calculate the cross price elasticity for both of the goods.