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OpenStudy (anonymous):
Ms.Blackmon invested $8000 part 4% and the rest at 5% per year how much did she invest at each rate if her total return per year on the investment was $380 ?
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hero (hero):
x + y = 8000 .04x + .05y = 380
OpenStudy (anonymous):
okay what we do next
hero (hero):
There are a few things you could do, but it might be easier to multiply the first equation by .04: .04x + .04y = 320 .04x + .05y = 380 .04x = .04x 320 - .04y = 380 - .05y .05y - .04y = 380 - 320 .01y = 60 y = 60/.01 y = 6000 x = 2000
OpenStudy (anonymous):
how did u get that
hero (hero):
I just showed you how I got it. Study the steps
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OpenStudy (anonymous):
lol my bad
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