Question 1169136
A nurse wants 4 liters of 5% lodine solution,
 She already has 3 liters of 3% iodine solution.
 What percentage of iodine should the additional liter contain?
:
let x = percentage require in decimal form
x(1) + .03(3) = .05(4)
x + .09 = .20
x = .20 - .09
x = .11 which is 11% required in the addition liter