Work point 4.5

1. -0.4/0.5= 8%

-60/400= 15%

-15%/.8%

1.8--->XED

2. due to the act that the Xed is 1.9 it means tjat tjese two produccts are substitutes

3. -0.4/5=-8%

30/600=5%

5/-8%= -0.6

4. due to the fact that the XED is -0.6 the two goods are compliments.