exchanging Swiss franc (sf) for Japanese (y)

exchanging Swiss franc (sf) for Japanese (y)

you are considering exchanging Swiss franc (sf) for Japanese (y). At the bank you see the following rates posted. SF/$=0.9154 and Y/$=100.26
A. What is the Y/SF exchange rate?
B.what is the SF/Y exchange rate?
C.if the SF appreciated by 10% what would you then new rate be?
D. If the Yen depreciated by 25% relative to the original exchange rate, what would the new rate be?