3. Disebuah peternakan, 6 ekor sapi dapat menghabiskan persediaan pakan selama 25 hari. Jika diasumsikan persediaan pakan sama, maka jika terdapat 15 ekor sapi berapa lama persediaan pakan akan habis... \( \begin{array}{ll}\text { a. } 15 \text { hari } 12 \text { hari } \\ \text { b. } 14 \text { hari } & \text { d. } 10 \text { hari }\end{array} \)

\( \frac{8}{5}-\frac{4}{5}=\square \) (Simplify your answer. Type a fraction.)

Find the \( 12^{\text {th }} \) term of the arithmetic sequence whose common difference is \( d=8 \) and whose first term is \( a_{1}=5 \).

\( \frac{12}{13}+\frac{1}{13}+\frac{10}{13}=\square \) (Type an integer or a fraction.)

1. \( \begin{array}{r}37-(24-8) \\ (56-48): 8\end{array} \)

Combine. Be sure to simplify your answer whenever possible. \( \frac{11}{18}-\frac{1}{18} \) \( \frac{11}{18}-\frac{1}{18}=\square \) (Type a fraction. Simplify your answer.)