It is 103 litres.
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2L is the answer.
1 liter = 1000ml. 1642/100 = 1.642L = 2L (to nearest liter)
1)Transfer 7 liters from the 12-liter jar into the 7-liter jar.We now have 5 liters in the 12-liter jar and 7 liters in the 7-liter jar. The 5-liter jar is empty, as of now.2)Transfer 5 liters from the 7-liter jar into the 5-liter jar.The 12-liter, 7-liter, 5-liter jars now contain 5, 2 and 5 liters respectively.3)Empty the contents of the 5-liter jar into the 12-liter jar.The 12, 7, 5- liter jars now contain 10, 2 and 0 liters respectively.4)From the 7-liter jar, take out 5 liters and pour 7 liters from the 12-liter jar into the 7-liter jar.We now have 3 liters in the 12-liter jar and 7 in the 7-liter one, while the 5-liter jar has only two liters in it.5)Fill up the remainder of the 5-liter jar using the 7-liter jar.That leaves us with 3 liters on the 12-liter jar and 4 liters in the 7-liter jar. The 5-liter jar is full.6)Pour the contents of the 5-liter jar into the 12-liter jar.There are 8 liters in the 12-liter jar and 4 liters in the 7-liter jar, while the 5-liter jar is empty.7)Pour the 4 liters that are in the 7-liter jar into the 5-liter jar.We now have 8 liters in the 12-liter jar and 4 liters in the 5-liter jar. The 7-liter jar is empty.8)Fill the 7-liter jar using the 12-liter jar.There is now only 1 liter in the 12-liter jar and 7 liters in the 7-liter jar and 4 liters in the 5-liter jar.9)Fill up the 5-liter jar using the 7-liter jar.There is now 1 liter in the 12-liter jar and 6 liters in the 7-liter jar and 5 in the 5-liter jar.NOTE: This might not be the only way, or the shortest way to do it.
Two-thirds of a liter is equal to 0.666... liters, which can be simplified to approximately 0.67 liters when rounded to two decimal places. This can also be expressed as 666.67 milliliters, as there are 1000 milliliters in a liter.
To measure 4 liters of water using a 7-liter and a 5-liter bucket, you can follow these steps: Fill the 5-liter bucket to the top and pour it into the 7-liter bucket, leaving 2 liters in the 5-liter bucket. Empty the 7-liter bucket and pour the remaining 2 liters from the 5-liter bucket into the 7-liter bucket. Fill the 5-liter bucket again and pour it into the 7-liter bucket, which already has 2 liters, making it a total of 4 liters in the 7-liter bucket.