Given:
There are 7 full, 7 half full, 7 empty tins of paint.
There are 3 people.
To find the amount of paint in each person and the number of tins if they are given the same amount of paint and the same number of tins:
The diagram is,
So, each per will receive 3 and a half amounts of paint and 7 tins.
Thus, the answer is,
Amount of paint is,

The number of tins is 7.