There are 2 tanks, one of 5 ltrs. and other of 3 ltrs.
We want to measure 4 ltrs. of water using only these two tanks.
We can not use any other container.
How can it be done ?

• First we fill 3 ltr tank and pour it into 5 ltr tank..
  Now 5ltr tank has 3 ltr water and 3ltr tank has 0ltr.
  Now again fill 3ltr tank and put it into 5 ltr. tank and 5 ltr. tank is full now nd we r left wid 1ltr water in 3ltr. tank.
  Now empty 5ltr tank and put 1ltr water in it that is left in 3 ltr tank.
  Status is : 5ltr tank=1ltr water and 3ltr=empty
  Now fill 3 ltr tank and put it into 5 ltr tank..
  So this way we have 4 ltr water in tank..
  
• 11 years agoHelpfull: Yes(4) No(0)
• fill water in this way
  A(5) B(3)
  0 0-intially both empty
  5 0-fill a
  2 3-pour 3ltr frm a to b
  2 0-empty b
  0 2-pour water frm a to b
  5 2-fill a
  4 3-pour 1ltr frm a to b
  4 0-empty b
  now we hav 4ltr water in A
• 11 years agoHelpfull: Yes(2) No(0)
• It can be done fill up 5 liters tank from it send to fill second tank In 5 litre tank litre is there.Again do the same process . We can get 4 litres.
• 11 years agoHelpfull: Yes(0) No(0)
• tank A=5ltr B=3ltr
  *fill 5ltr tank first pour into 3ltr tank u left with 2 ltr
  empty that 2 ltr and do it once again, you will get 2+2=4 ltr of water
• 11 years agoHelpfull: Yes(0) No(2)