tolong dijawab dengan jalannya ya

[tex]3 \times \frac{1}{2 } = \frac{3}{2} [/tex]
sisa gula ibu
[tex] \frac{3}{2} - ( \frac{1}{4} + \frac{1}{5} ) \\ \frac{3}{2 } - (\frac{5}{20} + \frac{4}{20} ) \\ \frac{3}{2} - \frac{1}{20} \\ \frac{30}{20} - \frac{1}{20} \\ = \frac{29}{20} = 1 \frac{9}{20} kg[/tex]=1,45