MOSCOW, Jan 20 by 31.03 kopecks, up to 86.8215 rubles, the dollar exchange rate — by 42.89 kopecks, up to 76.4408 rubles, follows from the data of the Bank of Russia. Thus, the cost of the bi-currency basket (0.55 dollars and 0.45 euros) , calculated at official rates, decreased by 37.55 kopecks, amounting to 81.1121 rubles.
