Investment interests

A man invested one third of his money at 5%, half of his money at 3%, and the rest of his money at 3.5%. If his total annual investment income was 675, how much had he invested?

at 7% interest and at 5% interest

a computed as simple interest b compounded yearly c what happens if the original principal is $10,000

we are trying to figure out how much money she invested at each rate?

I need some help on setting up this problem, and how to find the formula to get the correct answer.. this sounds like a different language like where do I start? Can I put this in a table or a... more

I need some help on setting up this problem, and how to find the formula to get the correct answer.. this sounds like a different language like where do I start? Can I put this in a table or a... more

I need some help on setting up this problem, and how to find the formula to get the correct answer..Here it is: A retiree needs a yearly income of $10,200 from his $150,000 IRA to help fund his... more

For 2 Years  4 Years  6 Years 

i nee to know the annual rate of a return to receive $930 back in one year after investing $18,600.

how much more will an investment of $15,000 earning 6.5% compounded continuously for 5 years earn compared to the same investment at 6.5% compounded monthly for 5 years?

    im learing about intererst and loans in school 

I got 30,000 but didn't put the problem together right. Melissa invested a sum of money a 3% annual interest. She invested three times that sum a 5% annual interest. If her total yearly interest... more