Andres, Bong, and Carlos entered into an agreement (embodied in a public instrument) wherein Andres and Bong would contribute land which was to be developed into a subdivision while Carlos would contribute his technical expertise and efforts in developing and marketing the subdivision.The land would then be sold to the public and Andres and Bong would be entitled to 60% and Carlos 40% of the sales proceeds.Pursuant to the agreement the land was mortgaged to a bank and the loan proceeds were used to develop the land.The subdivision project flopped because adverse claims on the lots scared away buyers.The bank eventually foreclosed on the land.Andres and Bong sued Carlos for the latter to bear a part of the losses.Is Carlos liable to bear a part of the losses?(10pts)