A foot race had 36 teams of a dozen runners each. By noon, of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?
A foot race had 36 teams of a dozen runners each. By noon, of the teams had finished the race, and 70 percent of the remaining teams finished the race by one o' clock. How many teams had not finished the race by one o' clock?