i need answers for these problems

Problem #1 (on mass concentration, or titer): An example of calculating the volume of intramuscular injection of a drug solution: Doctor's prescription: morphine 15 mg intramuscularly every 4 hours for pain. Available: morphine in vials of 10 mg/ml. Calculations: Problem #2 (on preparing solution by mixing two other solutions with the different concentrations) Calculate how many grams of 60% and 10% solutions need to mix for preparing 300 g of a 25% solution? (Please solve by the two methods studied in class if you can) Problem #1 (on mass concentration, or titer): An example of calculating the volume of intramuscular injection of a drug solution: Doctor's prescription: morphine 15 mg intramuscularly every 4 hours for pain. Available: morphine in vials of 10 mg/ml. Calculations: (Answer: You must give the patient 1.5 ml of morphine intramuscularly every 4 hours) Problem #2 (on preparing solution by mixing two other solutions with the different concentrations) Calculate how many grams of 60% and 10% solutions need to mix for preparing 300 g of a 25% solution? (Please solve by the two methods studied in class if you can)