1-If the exchange rate between the Euro and the Dollar was 0.68 EUR/USD on January 20, 2008 and it is 0.94 EUR/USD on January 20, 2017 did the Euro appreciate or depreciate? Did the US dollar appreciate or depreciate?

2-Under the classical gold standard, if one ounce of gold was equivalent to 20.67 USD and 4.87 GBP then what was the USD/GBP exchange rate?

The exchange rate would be 4.24 USD/GBP

3- If I had 35 USD, I could exchange that for how many GBP during that time?

35 USD = 8.25 GBP

show me the solution( how to get the numbers)