Ms. Greyson invested $3450, part of it at 11% per annum and the rest at 7% per annum. The interest she received from the first investment was $70 more than the interest from the second investment. How much was invested at each rate?
i dont know for sure, maybe if you take a picture of the worksheet then I might be to help you, and I can see if I had the same problem before but instead of it saying Ms. Greyson, it might say a different name