Please solve 4.1 a and b and please show work. having trouble.

PROBLEMS 4. 1 Calculate the following cross exchange rates : 2 . If exchange rates are S* /$ = $ 200/ $ and SS/ SFI = $0. 50 / SET, what is the S * / Str exchange rate ?"84 THE INTERNATIONAL FINANCIAL ENVIRONMENT b. The dollar is trading at S*/$ = Y100/$ and SSFr/$ = SFr1.60/$. What is the yen per franc rate, So*/SFr