Answers

2016-04-11T19:30:59+05:30
Each box weighs  4kg 500g
van's limited is 800 kg 
 so number of boxes  = 800/4.5
  number of boxes   = 17.77777
  number of boxes   = 17
0
2016-04-11T19:52:10+05:30
800 kg = 800 ×1000  = 800000 gm
4 kg 500 gm = 4× 1000 + 500 = 4500 gm
no. of boxes that can be carried in the van = 800000/ 4500
                                                                   = 177.78
                                                                   = 17.7 ( again convert it into kg)
that is 17 boxes
                                                 
0