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## 'Buckets of Thinking' printed from http://nrich.maths.org/

There are three buckets:
one red, one blue and one yellow. They each hold a maximum of $5$
litres.

Liquid is
measured carefully in whole litres and poured into the buckets, a
different number of litres in each one.

If the liquid in
the red bucket was poured into the blue bucket, it would then
contain the same amount of liquid as the yellow bucket.

Half the
contents of the yellow bucket is the same as twice that in the red
bucket.

How much liquid
is there in each bucket?

This problem is also available in French:

Question de
chaudières.