Thread: please help !

Mr. Nielsen invested $250,000 in two different automobile companies. The first earned a 5% profit, and second earned a 10% profit. If Mr. Nielsen made 3 times as much profit from the 10% investment as he did from the 5% investment, how much did he invest in the company that made 5%?

Originally Posted by bobby77

Mr. Nielsen invested $250,000 in two different automobile companies. The first earned a 5% profit, and second earned a 10% profit. If Mr. Nielsen made 3 times as much profit from the 10% investment as he did from the 5% investment, how much did he invest in the company that made 5%?

Let be how much invested in the 5% company, then the
amount invested in the 10% company was .

Profit from 10% investment:



Profit from 5% investment:



We are told that so:



or:




Which you should be able to solve.

RonL