1. The profits resulting from a grouping's activities shall be deemed to be the profits of the members and shall be apportioned among them in the proportions laid down in the contract for the formation of the grouping or, in the absence of any such provision, in equal shares.

2. The members of a grouping shall contribute to the payment of the amount by which expenditure exceeds income in the proportions laid down in the contract for the formation of the grouping or, in the absence of any such provision, in equal shares.