mia77752 mia77752 01-12-2020 Mathematics contestada Please helppppp Shawna knows that the number of milligrams in a Childs dose of certain medicine is equal to two-thirds the weight of the child's in pound. How much of the medicine should Shawna give a child who weighs 45 pounds? A: 15mg B: 30mg C: 35mg D: 40mg