Marx outlined the transformation problem as a theoretical solution to this discrepancy. The tendency of the rate of profit toward equalization means that, in this theory, there is no simple translation from value to money—e.g., "1 hour of value equals 20 dollars"—that is the same across every sector of the economy. While such a simple translation may hold approximately true in general, Marx postulated that there is an economy-wide, systematic deviation according to the organic compositions of the different industries, such that "1 hour of value equals 20 dollars times T", where "T" represents a transformation factor that varies according to the organic composition of the industry in consideration.