tolong kak bantuannya
Jawaban:
B. 4 hari
Penjelasan dengan langkah-langkah:
[tex] \frac{1}{t} = \frac{1}{a} + \frac{1}{b} \\ \frac{1}{t} = \frac{1}{6} + \frac{1}{12} \\ \frac{1}{t} = \frac{2}{12} + \frac{1}{12} \\ \frac{1}{t} = \frac{3}{12} \\ t = \frac{1}{ \frac{3}{12} } \\ t = 1 \times \frac{12}{3} \\ t = 4[/tex]
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