Question

李明以两种形式分别储蓄了2000元和1000元一年后全部取出扣除利息税得到43.92元利息,这两储蓄年利率和为3.

Answer 1

设2000元的储蓄利率为 a ,利息税为20%

由提干利率和为3得1000元的储蓄利率为(3% - a)

[ 2000a + 1000(3% - a) ] X ( 1 - 20% ) = 43.92

1000a + 30 = 43.92 / 80%

1000a = 24.9

a = 2.49%

则 3% - a = 3% - 2.49% = 0.51%

答:2000元储蓄利率为2.49%,1000元储蓄利率为0.51%