how much did she invest at each rate?

Question

A business woman invested part of php1,000,000 at 8% and the rest at 12%. Her annual income from these investments amounted to Php180,000.

Answer 1

??????????? "php" ???? thats a programming lingo

me thank yu tri tu sae...sumwon get INTEREST on 1,000,000$

sum at 8% & sum at 12%

& interest=180,000$/yeer

0.08*x +0.12*(1,000,000-x)=180,000

0.08x -0.12x +120,000=180,000

-0.04x=180,000-120,000=60,000

x=60,000/(-0.04)

=-15,000,000

sumwon make munee outa nuthun

thats bekauz 12% *1,000,000$=120,000$

but yu klaem sumwon get 180,000$ in interest