唔識計,希望有人幫到手?

Let x% be the expected inflation rate in Switzerland, then
CHF $2 × (1 + x%) / US $1 × (1 + 3%) = CHF $2.06 / US $1
2(1 + x%) / (1 + 3%) = 2.06
2(1 + x%) = 2.06(1 + 3%)
1 + x% = 1.03(1 + 3%)
1 + x% = 1.03(1.03)
x% = 1.03(1.03) - 1
x% = 0.0609
x% = 6.09%
The expected inflation rate in Switzerland is 6.09%.