1. **State the problem:** Tom wants to buy a camera. It costs 380 pounds in London and 2000 dirhams in Abu Dhabi. We need to find out in which city the camera is cheaper and by how much in pounds. 2. **Formula and conversion:** To compare prices, we must convert the price in dirhams to pounds. The formula is: $$\text{Price in pounds} = \frac{\text{Price in dirhams}}{\text{Exchange rate (dirhams per pound)}}$$ We need the current exchange rate from dirhams to pounds. Let's assume the exchange rate is 5 dirhams per pound (this is a typical approximate value; if you have a different rate, replace it accordingly). 3. **Convert Abu Dhabi price to pounds:** $$\text{Price in pounds} = \frac{2000}{5} = 400$$ 4. **Compare prices:** - London price: 380 pounds - Abu Dhabi price converted: 400 pounds 5. **Calculate difference:** $$400 - 380 = 20$$ 6. **Conclusion:** The camera is cheaper in London by 20 pounds.