Answer:

1L = 1,000ml so 4L must = 4,000ml.

4,000ml - 1,000ml = 3,000ml or 3L

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Answer:

To find a fifth we divide by five.
5 fifths - 3 fifths = 2 fifths, so:

We are left with 240ml.

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Answer:

Think about how many times the smaller number fits into the larger:

It would take 15 days

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