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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

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:**82**Joined:**Sat Feb 28, 2009 8:53 pm

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