Question 193776
assume  simple  interest  ???????,,,I=PRT
,
yr,,,, invested,,,,,,interest,,,,,,invested,,,,,interest
0,,,,,,8000
1,,,,,,,,,,,,,,,,,,,,,,, 8000R(1),,,,2500
2,,,,,,,,,,,,,,,,,,,,,,, 8000R(1),,,,,,,,,,,,,,,,,,, 2500R(1)

total    8000 +2500+2*8000R  +2500R  =11,445
,
10,500  +  16000R  +2500R=11,445
       18500R=945
R=   945/18500  =  .05108 = 5.108 %
,
check , 8000 + 2500 + 2*8000*.05108  + 2500* .0518 =11,445