Don L. answered • 02/05/20

Fifteen years teaching and tutoring basic math skills and algebra

Hi Stefan, let n represent the amount invested at 3%. Then the amount invested at 4% would be (19000 - n).

Equation to solve:

.03 * n + .04 * (19000 - n) = 740

.03n + .04 * 19000 - .04n = 740

.03n + 760 - .04n = 740

Combine terms:

-.01n = -20

n = 2000

The amount of money invested at 3% was $2000.

The amount of money invested at 4% was $19000 - $2000, or 17000

Questions?