each country in the world has a currency which prices of goods and services are quoted rupiah indonesia australian dollar aus tralia ringitt malaysia case timor leste us since november 2003 its local denomination centavo price one terms another is called an exchange rate rates play central role interna tional trade because they allow computation relative produced different countries thereby allowing com parison those across currencies usually re ported daily newspapers financial sections bpa abp plays such reporting disseminates set selected ex change together with some infor mation on interest stock markets changes described as de preciations or appreciations depreciation against indonesian fall eg decrease from 8800 to 8500 for it makes purchase timorese instance coffee