Decision Tree

If this is supposed to be

[(-2/5)(log₂ (2)] / 5    -  [(3/5) log₂ (3)] / 5       we have

(-2/25) (1)  -  (3/25) [ log (3) ]  /  [ log(2)    ≈ -0.2701955

 However, if this is supposed to be

(-2/5) log₂ (2/5)  - (3/5)log₂ (3/5)    then we have

(-2/5) log₂ (0.4)  - (3/5)log₂(0.6)  ≈  0.970951

[ The use of parentheses is important in these problems.....!!!! ]