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An investor has up to $450,000 to invest in two types of investment. Types A pays 6% annually and type B pays 10% annually. To have a well-balanced portfolio, the investor imposes the following conditions. At least one-half of the total portfolios is to be allocated to type A investments and at leas...

thank you for replying
umm...i have tried n i got out this equations from the question
let x- types a and y = types b
maximize, 0.06x+0.10y
constraints, x+y<=450,000
y<=x/2

can this be the equation and constraints