Sandra asks…Can someone work out these mixtures and weighted averages problems?Studying for a test and I would like to see these problems set up as an equation and then worked out please. Thanks!
1.How many liters of a 90% acid solution must be added to 6 liters of a 15% acid solution to obtain a 40% acid solution?
2.Two airplanes leave the Atlanta airport at the same time, traveling in opposite directions. One plane travels 30 miles per hour faster than the other. After 3 hours, the planes
