15. If a pediatric vitamin contains 1500 units of vitamin A per milliliter of solution, how many units of vitamin A would be administered to a child given 2 drops of the solution from a dropper calibrated to deliver 20 drops per milliliter of solution?

To find out how many units of vitamin A would be administered to a child given 2 drops of the solution, we need to first determine the amount of solution in each drop.<br /><br />Given that the dropper is calibrated to deliver 20 drops per milliliter of solution, we can calculate the amount of solution in each drop by dividing 1 milliliter by 20 drops.<br /><br />1 milliliter / 20 drops = 0.05 milliliters per drop<br /><br />Now, we can calculate the amount of vitamin A in each drop by multiplying the amount of solution in each drop by the amount of vitamin A per milliliter of solution.<br /><br />1500 units of vitamin A per milliliter * 0.05 milliliters per drop = 75 units of vitamin A per drop<br /><br />Finally, we can calculate the total amount of vitamin A administered to the child by multiplying the amount of vitamin A in each drop by the number of drops given.<br /><br />75 units of vitamin A per drop * 2 drops = 150 units of vitamin A<br /><br />Therefore, the child would be administered 150 units of vitamin A.