1. In 2020, a US $ was equivalent to 7 Chinese Yuan and a Spain Peseta was equal to $0.50

In 2021, a US $ is equivalent to 8 Chinese Yuan and a Spain Peseta was equal to $0.55.

By what percentage did the cross-exchange rate of the Spain Peseta (the number of Spain Peseta that can be purchased with one Peseta) change over the last year?

2. Explain how import and export result in a win-win situation for two countries using the Production possibility frontier concept. Use hypothetical numerical figures (with graphs) to explain your answer.

^3.

Goods X	Country A (in $)	Country B (in $)	Country C (in $)
Average Cost	30.5	29.4	30.9
Price per unit for domestic sales	31.2	31.1	30.9
Price charged in country D	31.9	30.6	30.6

I. Which of the above-mentioned three exporters engage in the anti-competitive acts in the international market while pricing its export of good X to country D?

II. What would be the effect of such pricing on the domestic producers of good X? Advise remedy available for Country D?