Question 69955
Let x=value of 11% bond

Then 3x=value of 10% bond

Interest(I)=Principal(P) times Rate(R) times Time(T) or I=PRT; T=1

So our equation to solve is:

0.11x+0.10(3x)=$307.50

0.11x+0.3x=307.50
0.41x=307.50  divide both sides by 0.41
x=$750-------------------------------------value of 11% bond

3x=3(750)=$2250-------------------------------value of 10% bond

CK

750(.11)+2250(.10)=307.50

82.5+225=307.50
307.50=307.50


Hope this helps----ptaylor