Posted by cole on Thursday, October 22, 2009 at 1:47pm.
Rosa invested $8000 for one year, part ast 8% annual interest and the balance at 10% annual interest. Her total interest for the year was $700. How much money did she invest at each rate?

Math  bobpursley, Thursday, October 22, 2009 at 2:04pm
8000=LR + HR (lower rate $, higherrate$)
.08*LR+ .10HR=700
solve for LR, HR. 
Math  Chris, Wednesday, December 15, 2010 at 4:03am
LR 56
HR 70