In a hospital, 4 patients have a positive culture for norovirus, 6 patients have a positive culture for clostridium difficile and 36 patients have a positive culture for MRSA. The remaining 256 patients in the hospital do not have any positive cultures. What percentage of the total number of patients have norovirus(round to the nearest whole number).

A patient weighing 48kg passes the following quantities of urine in a 12 hour period: 250 mL, 116mL, 112mL. Urine output per kg during this period is (round to the nearest whole number):

A patient is prescribed 90 milligrams (mg) of a drug. The stock concentration is 300 mg/ 5ml. What is the correct volume to give the prescribed dose?