Fruit are packed in boxes,each weighing 4kg 500g.how many such boxes can be loaded in a van which cannot carry beyond 800kg?

Answer :

it can carry 177 boxes .
weight of a fruit box = 4.5Kg 
no. of box = total weight that can carry van / weight of a fruit box
               = 800/4.5
               =177.78
since no of can not be fraction , hence 
no. of box = 177