SOLUTION: how can 6,300 be invested, one part at 6% and the remainder at 7%, so that the income will be the same on each investment?

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Question 664889: how can 6,300 be invested, one part at 6% and the remainder at 7%, so that the income will be the same on each investment?
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
let x be the amount you invest at 6%. Then 6300+-+x is the amount invested at 7%
You are told the interest from both investments is the same. So
x+%2A+0.06+=+%286300-x%29+%2A+0.07
0.06x+=+441+-+0.07x
0.13x+=+441
x+=+3392.31
invest 3392.31 at 6% and 6300-3392.31 at 7%