A.1000x/17x+18(1-x) B.1000x/18(1-x) C.1000x/35+18(1-x) D.1000xp/18(1-x)
A.1000c/1000p-17c B.17c/1000-17c C.1000cp/1000-17c D.1000c/1000p-35c
A.17m/10p B.17m/1000+17m C.17m/1000 D.35m/10