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 ?

Question

hero · Answer

x + y = 8000
.04x + .05y = 380

anonymous · Answer

okay what we do next

hero · Answer

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

anonymous · Answer

how did u get that

hero · Answer

I just showed you how I got it. Study the steps

anonymous · Answer

lol my bad