Answer:
In London
Step-by-step explanation:
Because if you see, there's a sign of equal = in each one, which means that in one place they give you for 1pound = 1.14€, and in the other one (you can change the position of both sides of the sign) in the other place they give you per 0.86pounds = 1€. In which one will they give Elaine more euros? In the one where the change is higher, which is in London. It's because for each pound in London they give you 14cents more than in Paris.
Hope I'm being helpful...!!!