Difficulty: Medium
Correct Answer: When the sum of price elasticities of demand for exports and imports exceeds one (high elasticities)
Explanation:
Given data
Concept / Approach
Marshall–Lerner condition: Devaluation improves the trade balance if the absolute sum of export and import demand elasticities > 1. Then the quantity response dominates the price effect, raising export receipts and reducing import outgo.
Reasoning
High elasticities → large volume response → trade balance improves. Inelastic demands or rapid domestic inflation can offset/negate benefits.
Final Answer
When (|εx| + |εm|) > 1, i.e., high elasticities.
Discussion & Comments