Question

sally invested some money at 11% interest. sally also invested $106 more than 2 times that amount at 5%. how much is invested at each rate if sally receives $335.21 in interest after one year?

Answer 1

And also this problem....A dairy needs 380 gallons of milk containing 7% butterfat. How many gallons each of milk containing 8% butterfat and milk containing 3% butterfat must be used to obtain the desired 380 gallons? ....@satellite73 can i use the system of equations for both of these problems or no?

Answer 2

@satellite73