Answer:
Firstly, we have to transform CHF to [tex]\£[/tex] in order to work with the same currency and make the comparisson:
If [tex]\£1=1.55CHF[/tex]
[tex]193.75CHF\frac{\£1}{1.55CHF}[/tex]
Then:
[tex]193.75CHF=\£125[/tex]
Now we can make the comparisons:
a) In Geneva the watch costs [tex]193.75 CHF=\£125[/tex] and in Manchester it costs [tex]\£143[/tex].
According to this:
b) If we want to know by how much is cheaper, we have to substract from the expensive price the value of the cheaper price:
[tex]\£143-\£125=\£18[/tex]
Therefore: