if-the-price-of-smartphones-decreases-by-20-and-the-quantity-demanded-of-smartph

Question

If the price of smartphones decreases by 20% and the quantity demanded of smartphone cases increases by 30%, what does this indicate about the relationship between smartphones and smartphone cases?

Accepted Answer

They are complements.

Answer

They are inferior goods.

Answer

They are substitutes.

Answer

They are unrelated.