The table below shows the effective exchange rate index for Country Y in 2018 and 2020.
| Year | Effective exchange rate index |
|---|---|
| 2018 | 150 |
| 2020 | 120 |
All other things being equal, which one of the following options provides both the correct percentage change in the index from 2018 to 2020 and a valid reason why this change may have occurred?
20%20\%20% change; reason: A decrease in interest rates in Country Y
20%20\%20% change; reason: An increase in interest rates in Country Y
25%25\%25% change; reason: A decrease in interest rates in Country Y
25%25\%25% change; reason: An increase in interest rates in Country Y
310 exam-style questions on AQA A Level Economics 2.6 The international economy (A-level only), covering 2.6.1 Globalisation, 2.6.2 Trade, 2.6.3 The balance of payments, 2.6.4 Exchange rate systems, and 2.6.5 Economic growth and development. Each one has a worked solution and a mark scheme showing where the marks go.