Question

tolong ya kak menggunakan cara jg ​

Answer 1

Nomor 10

•› Panjang jalan sebenarnya

[tex]\begin{aligned} \sf Js &= \sf \frac{Jp}{S} \\ &= \sf \frac{30}{1 : 500} \\ &= \sf 30 \times 500 \\ &= \sf 15.000 \ cm \\ &= \sf 150 \ m\end{aligned}[/tex]

•› Banyak tiang lampu

[tex]\begin{aligned} &= \sf \frac{Panjang \ jalan \ sebenarnya}{Jarak \ setiap \ lampu} \\ &= \sf \frac{150}{15} \\ &= \sf 10\end{aligned}[/tex]

⟨Opsi: D⟩

 

Nomor 11

•› Kecepatan keduanya

[tex]\begin{aligned} \sf &= \sf 40 \ km/jam + 20 \ km/jam \\ &= \sf 60 \ km/jam \\ \end{aligned}[/tex]

•› Waktu mereka berpapasan

[tex]\begin{aligned} &= \sf Kecepatan_{Rio} + Kecepatan_{Hendi} \\ &= \sf \frac{120}{60} \\ &= \sf 2 \ jam \\ &= \sf 02.00 \end{aligned}[/tex]

•› Maka

[tex]\begin{aligned} \sf &= \sf 09.00 + 02.00 \\ &= \sf 11.00 \end{aligned}[/tex]

⟨Opsi: B⟩

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