AT THAT RATE

{adv. phr.} At a speed like this or that; with progress like this or that. * /John's father said that if John kept going at that rate he would never finish cutting the grass./ * /So Johnny has a whole dollar! At this rate he'll be a millionaire./ * /"Three 100's in the last four tests! At this rate you'll soon be teaching the subject," Tom said to Mary./