Homework Help: math

Posted by jessica on Thursday, January 15, 2009 at 9:24pm.

A prfessor wants to supplement her pension with investment interst. If she invest $28,000 at 6%, how much more would she have to invest at 7% to achieve a goal of %3,500 per year in supplemental income?

math - Reiny, Thursday, January 15, 2009 at 10:23pm
28000(1.06) + x(1.07) = 3500

solve for x
DOUBLE-CHECK math - Reiny, Thursday, January 15, 2009 at 11:10pm
just looked at my answer again, and it looks like I messed up

should have said:

28000(.06) + x(.07) = 3500

the answer is 26000

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