Question

how do you solve this

I keep trying and I keep getting the wrong answer. I keep getting x=19000 and that is not correct

.10=.9(x/15000)+.14[(1-x)/15000]

Answer 1

multiply each term by 15000

1500 = .9x + .14(1-x)
expand, collect like terms ...
I get x = 1973.5

which when substituted into the original equation will satisfy it.