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Steve was checking. “You sold 74 spark plugs today,” he said. “That’s fine, but how so many?” “Just the usual servicing. 8-cylinder, 6-cylinder, and 4-cylinder cars,” replied Andy. “A full set for every car, and there were twice as many fours as sixes.” How many 8-cylinder cars?
Four 8-cylinder cars
Seven 8-cylinder cars
Six 8-cylinder cars
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