Answer:

1L = 1,000ml and one quarter of
1,000 = 250, so:

1,000ml - 250ml = 750ml or 0.75L

Answer:

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

We are left with 220ml

Answer:

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

It would take 50 days