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Several ways to achieve this - here is one solution.

Fill the 5 litre container and pour it all into the 9 litre container.

Fill the 5 litre container and pour it into the 9 litre container until the latter is full - leaving 1 litre in the 5 litre container.

Empty the 9 litre container.

Fill the 3 litre container and empty into 9 litre container. Repeat. There are now 6 litres in the 9 litre container.

Pour the 1 litre from the 5 litre container into the 9 litre container which now contains 7 litres.

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Q: Three containers have capacities of three five and nine liters How can these containers be used to measure exactly seven liters of water?

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A pail is not a standard measure. It can have different capacities.

Different cars have tanks with different capacities.

This method works with any such problem, as long as the two buckets' liter-capacities (or gallon capacities, etc.) have no common factors, or else the common factors are also factors of the amount you're trying to measure. Fill the 7-liter bucket, and empty 5 liters of it into the 5-liter bucket; then dump out the 5 liters. Two liters will remain in the 7-liter bucket; transfer them to the 5-liter bucket. Fill the 7-liter bucket again, and empty enough of the bucket into the 5-liter bucket to fill it. That should only be 3 liters transfered, leaving 4 liters left in the 7-liter bucket. QED.

You could.

Liters and millimeters are different units of measurement- liters measure volume, and meters measure distance. There are 1000 millimeters in a meter and 1000 milliliters in a liter.

Related questions

A pail is not a standard measure. It can have different capacities.

11720 litres

(1,000 liters) / (2 liters per container) = 500 containers.

Uh, in liters? I'm not exactly sure what this question is asking...do you mean the units? or exactly how to measure it? Because if you want to measure water, I'd say use a measuring cup...

Liters measure volume.

You cannot. Each of the three containers has a capacity of an even number of litres. Their sums and differences will always be even. There is, therefore, no way to measure out an odd number of litres using them.

Exactly 30,000 liters.

1 US gallon = 3.78541178 liters. 1 UK (Imperial) gallon = 4.54609118 liters. 3.78541178 liters / 1.5 liters =~ 2.52 4.54609118 liters / 1.5 liters =~ 3.03 2.52 - 1.5 liters containers will make a US gallon 3.03 - 1.5 liters containers will make an imperial gallon.

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I have seen beakers with filled capacities from 25 mL to 5 liters.

Meters measure length, liters measure capacity, and kilograms measure weight.

Exactly 0.4

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