Hanai invested $20,000, part at 3% interest and part 5% interest. the investment returned $800. what is the system of equations that represents this situation

t + f = 200003%·t + 5%·f = 800

Step-by-step explanation:

Let t represent the amount invested at three percent; let f represent the amount invested at five percent. The total of these amounts is $20,000. The total of the interest earned by each amount is $800. Of course the interest earned is the amount multiplied by the interest rate.

Idon’t know what the answer is i wish i could

32

step-by-step explanation:

these are your clues: 1. kim ran 18 races2. this was four fewer races than twice thenumber, notice it says twice the number, so you would do the equation 18x2-4; which equals the number 32.thus, 32 is your answer.