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9708 · 6.4

Exchange rates — practice questions

Practice and worked examples for 9708 Exchange rates. Short previews only — attempt the full question in MarkScheme against the official scheme.

Worked example 1

The sterling–dollar exchange rate falls from £1 = 1.40to£1=1.40 to £1 = 1.20. A UK car costs £20 000 to produce and is sold in the US.

(a) Calculate the dollar price before and after depreciation. (b) Explain the likely effect on UK car exports and aggregate demand.

Show solution outline

(a) Before: 1.40×£20000=1.40 \times £20 000 = **28 000** After: 1.20×£20000=1.20 \times £20 000 = **24 000**

The car is $4 000 cheaper for US buyers — UK exports more competitive.

(b) Exports: Lower dollar price should increase quantity demanded of UK cars in the US (assuming demand is not perfectly inelastic).

Imports: Sterling buys fewer dollars, so US goods cost more in £ → import spending may fall.

Net exports (X − M) likely rise → AD increases (ceteris paribus).

Evaluation: Effect depends on PED for exports/imports and whether trading partners retaliate. Short-run volume may lag (J-curve at A Level).

Worked example 2

A UK company imports a machine from Germany priced at €50,000. Initially, the exchange rate is £1 = €1.15. The pound then appreciates against the euro to a new rate of £1 = €1.25.

(a) Calculate the cost of the machine in pounds sterling (£) before the appreciation. (b) Calculate the cost of the machine in pounds sterling (£) after the appreciation. (c) Explain one likely effect on the UK economy.

Show solution outline

(a) Before appreciation: To find the cost in pounds, we divide the euro price by the exchange rate (€ per £). Cost in £ = Price in € / Exchange Rate Cost in £ = €50,000 / 1.15 = £43,478.26

(b) After appreciation: Using the new exchange rate: Cost in £ = €50,000 / 1.25 = £40,000.00

The appreciation of the pound has made the imported machine £3,478.26 cheaper for the UK company.

(c) Effect on the UK economy: Cheaper imports, such as this machine, reduce production costs for UK firms. This can lead to lower prices for consumers or higher profit margins for the firm, potentially encouraging further investment. This is a positive supply-side effect that can help reduce cost-push inflationary pressure in the economy. However, if the appreciation leads to a significant increase in overall import spending, it could worsen the UK's current account balance (ceteris paribus).