ibm - there are 5 packages the weight of 1st package is 500 kg and the weight of the 2nd package is 50 higher than the weight of 3rd package whose weight is 45 higher than the 1st package weight the fourth package at 360 kgs is 60 lighter than the fifth packag - skillgun

Weight of 1st package = 500 kgs
Weight of 3rd package is 45% higher than the 1st package.
i.e., 45 x 500/100 + 500 = 225 + 500 = 725 kgs.
2nd package is 50% higher than the weight of 3rd package
i.e., 50 x 725/100 + 725 = 1087.5 kgs
Weight of the 4th package is 360 kgs which is 60% lighter than the fifth package
Let the weight of 5th package be X.
Then the weight of 4th package = 360 kgs = X - 60X/100
360 kgs = X - 60X/100
40X/100 = 360
X = 900
Therefore, the weight of 5th package = 900 kg.
Total of 5 packages = (500 + 1087.5 + 725 + 360 + 900) = 3572.5 kgs
Average = 3572.5/5 = 714.5
Hence the answer is 714.5 kgs.