SOLUTION: Mr collins invested a sum at 4% and an equal amount at 6%. His retun totals $40 per year. How much money was invested at each rate?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Mr collins invested a sum at 4% and an equal amount at 6%. His retun totals $40 per year. How much money was invested at each rate?      Log On