Respuesta :
Step-by-step explanation:
0,06x + 0,1(20000-x) = 0,09(20000)
0,06x + 2000 - 0,1x = 1800
-0,04x = -200
x = -200 /(-0,04)
x = 5000
therefore,
for 6% interest => total invest =$5000
for 10% interest => total invest = $15000
Screenshoting my answer because brainly somehow thinks there are bad words...
