The Purplemath Forums
Helping students gain understanding and self-confidence in algebra.
[SPLIT, MOVED] invested $ at 3%, twice $ at 9%, got $315 
2 posts
• Page 1 of 1
[SPLIT, MOVED] invested $ at 3%, twice $ at 9%, got $315
by JP tang on Thu Jan 12, 2012 1:13 pm
A man invested a certain amount of money at 3% and twice as much at 9%, giving the annual income of 315. How much did he invest in each rate?
- JP tang
- Posts: 1
- Joined: Thu Jan 12, 2012 12:48 pm
Re: [SPLIT, MOVED] invested $ at 3%, twice $ at 9%, got $315 
by FWT on Thu Jan 12, 2012 4:24 pm
JP tang wrote:A man invested a certain amount of money at 3% and twice as much at 9%, giving the annual income of 315. How much did he invest in each rate?
They show how to do this on this page.
- Code: Select all
table:
| amt | rate | total
--------------------------
$ | x | 0.03 | 0.03x
twice | 2x | 0.09 | 0.18x
total | 3x | NA | 315
- FWT
- Posts: 49
- Joined: Sat Feb 28, 2009 8:53 pm
2 posts
• Page 1 of 1