Question 324441
Let x be the small inheritance, then x/4 is the money invested in stocks and .04*x/4 is the stocks interest, x/4 is the money in bonds and .08*x/4 is the bonds interest, x/2 is the money in Treasury Bills and .02*x/2 is the interest from Treasury Bills. All three of the interest add up to $4000 so:
.04*x/4 + .08*x/4 + .02*x/2 = 4000
.04*x/4 + .08*x/4 + .02*x*2/2*2 - 4000
.04*x/4 + .08*x/4 + .04*x/4 = 4000
(.04 + .08 + .04)*x/4 = 4000
.16*x/4 = 4000
x = 4000*4/.16
x = 16000/.16
x = 100000

So the amount of the inheritance is $100000.