alice invested a portion of $500 at 4% interest and the remainder at 5%.

how much did she invest at each rate if her total income from both investments is $23.28.

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- Sep 30th 2008, 05:02 AMwatsod8algebra word problem
alice invested a portion of $500 at 4% interest and the remainder at 5%.

how much did she invest at each rate if her total income from both investments is $23.28. - Sep 30th 2008, 05:27 AMmasters
- Sep 30th 2008, 05:27 AMearboth
- Sep 30th 2008, 06:17 AMTweety
Hi,

I tried to solve this and I don't get $162 . can someone please check my working and tell me were I have gone wrong .

thank you

$\displaystyle 0.4x + 0.5(500-x) = 23.38 $

$\displaystyle 0.4x + 250-0.5x = 23.38 $

$\displaystyle -0.1x + 250 = 23.38 $

$\displaystyle -0.1x = -226.62 $

$\displaystyle x = 2266.2 $

? - Sep 30th 2008, 06:17 AMmasters
- Sep 30th 2008, 06:19 AMTweety
I don't get $172. were have I gone wrong?

- Sep 30th 2008, 06:26 AMmasters