HELP ME I NEED THE ANSWER NOW!

Question

Last year, Pablo had $20,000

 to invest. He invested some of it in an account that paid 9%

 simple interest per year, and he invested the rest in an account that paid 10%

 simple interest per year. After one year, he received a total of $1990

 in interest. How much did he invest in each account?

Answer 1

1990/20000 = .0995 = 9.95% average return

9.95 is much closer to 10 than to 9, so most of the funds invested will be in the 10% not 9% account

9.95 is within .05 of 10, but .95 of 9. .05/.95 = 1/19 19 times more will be invested at 10% than at 9%

It's a 19:1 ratio of the $20,000 or $19,000 to $1,000, with $19000 invested at 10% and $1,000 invested at 9%