In a warehouse there were 640 kg of buckwheat. pevy day gave the 3rd fraction 8.a the second day the 2nd fraction 5 all grain. what day gave more buckwheat and on how many kilograms.?

54
1 way. 1) 3/8 * 640 = 640: 8 * 3 = 240 (kg) - gave out in the first day; 2) 2/5 * 640 = 640: 5 * 2 = 256 (kg) - gave out in the second day; 3) 256 - 240 = 16 (kg) - gave out one so many more in the second day. Answer: in the second day gave at 16 kg of grain more. The 2nd way. We will take all grain for unit (whole). 3/8 = 15/40 - additional multiply. 5 2/5 = 16/40 - additional multiply. 8 1) 16/40 - 15/40 = 1/40 - one so much more grain was given in the second day: 2) 1/40 * 640 = 640: 40 = 16 (kg) - one so much more grain gave out in the second day. Answer: 16 kg more in the second day.
118
Answer add