Question

Given a jar of 8 liters full of water, show how you can divide the quantity of water into two halves using only 5 liters and 3 liters jars

Answer 1

what we will do first we will transfer the 5 ltr jar from 8ltr jar 
so now we have ratio 3:5:0
than we transfer 3 ltr ware from 5lt jar to the 3 ltr jar
so now we have ration 3:2:3
than we will transfer 3ltr water to from the 3 ltr jar to 8 ltr jar than the 
ration we have now 6:2:0
than we will transfer 2 ltr water from 8ltr jar to 5 ltr 
now we have ration 4:4:0
this what we need