Ihave 2 separate questions i wish to ask. idk if it's possible, may you show how the problem is solved:
1. how many ounces of a 5% solution and how many ounces of a 15% solution must be mixed to get 40oz of a 9% solution ?
2. last year, taz invested a total of $7500 in two accounts earning simple interest. some of it he invested at 9.5% and the rest was invested at 6.5%. how much did he invest in each account if he earned a total of $577.50 in interest last year?