Yan has already finished 3/5 of the 45 math problems he was assigned today. Each math problem took him 1 4/5 of a minute to complete. If this pace continues, how much more time, to the nearest minute, will the rest of the problems take him to finish?
C. 3/5 of 45 = (45÷5)*3 = 27. 2/5 of 45 = 18 questions to complete. 4/5 of a minute = (60÷5)*4 = 48 seconds. 1 minute + 48 seconds = 1 min 48. 1 min 48*18 = 1944. 1944÷60= 32.4. Round or down and it gives 32 minutes.
