Question 133955
Let $x and #25000-x be the split invested in 5% and 4% annual yield bonds.The annual yields from the bonds = 0.05x + 0.04(25000-x) = 1140 ==>
 0.05x-0.04x =1140 - 25000*0.04 =1140 - 1000 = 140==>
x= 140/(.o1)=14000.

x=14000  and 25000-x = 1100 are the investment in 5% and 4% annual yield bonds