Raymond B. answered 03/06/22
Math, microeconomics or criminal justice
11,500 returned net 1,100
some at 15% gain, the other at 10% loss
.15x - .10(11,500-x) = 1100
.15x+.10x = 1100 +1,150 = 2250
.25x = 2250
x = 2250/.25
x = $9,000 invested at 15%
11,500 -9,000 = $2,500 invested with a loss of 10%
.15(9,000) -.10(2500)= 1,350 - 250 = 1100