The quarrying cost of marble and granite blocks plus delivery cost to the processing plant each is P2,400 per cubic meter. Processing cost of marble into tiles is P200 per square meter and that of granite into tiles also P600 per square meter. If marble has a net yield of 40 square meters of block and sells at P400 per square meter and granite gives a net yield of 50 square meters of tiles per cubic meter of block and sells at P1,000 per square meter, determine the more profitable material, considering all other cost to the same and how much is the difference in profit.