Container A contains 20 L of 20% antifreeze and 80% water. Container B contains 400 L of 90% antifreeze solution. How many L of container A should be replaced with an equal volume from container B so that the final solution in container A will have 45% antifreeze and 55% water?
TJ test prep practice problems for our students and readers. The problems provide a very small sampling of what Optimal TJ Prep students work with.