Answer:
The coat is cheaper in London and it is 6.6 euros cheaper than in Dublin
Step-by-step explanation:
Given
Cost of coat in London = £60
Cost of coat in Dublin = €105.60
In order to find where the coat is cheaper, the price should be in same unit
It is also given that
£1 = €1.65
so,
Price of coat in Euro will be:

So the price of coat in London is 99 Euros
Comparing both the prices we see that
Price in London < Price in Dublin
99 < 105.60
The difference in price is:

Hence,
The coat is cheaper in London and it is 6.6 euros cheaper than in Dublin