Question that I cannot figure out on homework!!

[CiaoBella_Xo]

For a child, the M.D has ordered polycillin 35mg q 6h. the polycillan comes in a suspension: mg per ml. How much do you give?

[macgirl]

cross multiply and divide, I use it for every problem. Basically the dosage you have on hand vs what you need and solve for x.