Question

Jericho needs to measure exactly 5 liters of water. He has two containers – one that

holds exactly 7 liters and one that holds exactly 4 liters. Describe or illustrate a
procedure that will give exactly 5 liters in the 7 liter container.

Answer 1

Explanation:

Step 1:

Fill up the 4 L container completely and pour all contents into the 7L container so that the 7L container has 4L in it, and the 4L container has 0.

Step 2:

Fill up the 4L container completely again and pour into the 7L container until it is full, so the 7L container is now completely full with 7L of water, leaving 1L in the 4L container.

Step 3:

Dump out all the water in the 7L container and pour in the 1L of water from the 4L container. The 7L container now has 1L and the 4L container has 0.

Step 4:

Fill up 4L container completely and pour into the 7L container to make 5L.

Hope this helped!