यदि सीमांत बचत प्रवृत्ति (MPS) = 0.3 और सीमांत आयात प्रवृत्ति (MPM) = 0.2 है, तो विदेशी व्यापार गुणक (Foreign Trade Multiplier, Kf = 1MPS + MPM) का मान क्या होगा?

According to the optimal tariff theory, a large nation can potentially increase its economic welfare by imposing a tariff because:

According to the Marshall-Lerner condition, a currency depreciation will improve the trade balance if the: