A store sold a Brand A computer for 3 × as much as it sold a Brand B computer. The store's gross profit on the Brand A computer was 80 percent of the price that the store paid for the Brand A computer, and the store's gross profit on the Brand B computer was 20 percent of the price that the store paid for the Brand B computer. The store's total gross profit on the two computers was what percent of the total amount that the store paid for the two computers?