According to the put-call parity for currencies, the relationship between a European call and put option is given by the formula: $C - P = S \times e^{-r_f \times T} - X \times e^{-r \times T}$. Given: S = \`1.80$ $C = \$0.13`5$ X = \`1.70$ $T = 1$ year $r = 5\%$ or $0.05`$ (domestic risk-free rate) $r_f = 8\%$ or $0.08$ (foreign risk-free rate)

Substituting the values into the formula: $0.135 - P = 1.80 \times e^{-0.08 \times 1} - 1.70 \times e^{-0.05 \times 1}$`$0.135 - P = 1.80 \times 0.9231 - 1.70 \times 0.9512$ $0.13`5 - P = 1.6616 - 1.6171$ $0.135 - P = 0.0445$$P = 0.135 - 0.0445 = `$0.09`05$