You are given a 4l and 5l jar completely filled and an empty jar . You have to fill empty jar to 7l. Refilling of beakers was not allowed. Water can neither be thrown, it can only be transferred from one jar to another.
Answers
Answer:
Explanation:
the steps of refilling the empty bottle to 7 liters:
1) Pour the 4 liters of water from the 4 liter jar into the empty jar.
- The empty jar now has 4 liters of water while the 4 liter jar is empty.
2) Pour the 5 liters of water into the empty 4 liter jar.
- The 5 liter jar will have 1 liter left in it.
- The 4 liter jar is now full of 4 liters of water
- The initial empty jar has 4 liters of water.
3) Pour the water from the 4 liter jar into the initial empty jar.
- The 4 liter jar is now empty
- The initial empty jar now has 8 liters of water.
- The 5 liter jar has 1 liter of water.
4) Transfer the 1 liter of water from the 5 liter jar to the 4 liter jar.
5) Fill the 5 liter jar with the water from the initial empty jar ( contains 8 liters).
- The water left in the initial empty jar is 8 liters - 5 liters = 3 liters.
- The initial empty jar now has 3 liters of water.
6) Fill the 4 liter jar with water from the 5 liter jar
7) Transfer water from the 4 liter jar into the initial empty jar containing 3 liters of water.
The jar will now have:
3 liters + 4 liters = 7 liters of water