Heidi likes to mix her own horse feed. She creates a mix that is 12 ​% ​molasses-covered oats using 20​% ​molasses-covered oats and ​8% ​molasses-covered oats. How many pounds of each does she need to create 21 pounds of the​ mixture?

Captain umaima has a ship, the h.m.s. khan. the ship is two furlongs from the dread pirate nadia and her merciless band of thieves. the captain has probability 3/7 of hitting the pirate ship. the pirate only has one good eye, so she hits the captain's ship with probability 2/5. if both fire their cannons at the same time, what is the probability that the captain hits the pirate ship, but the pirate misses.