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Yesika
Yesika asked in Sains & MatematikaMatematika · 7 years ago

Tolong dong ........soal mtk nih..?

Sebuah kereta api berjalan dari kota C ke kota D dengan kecepatan 85 km/ jam, ditempug dalam waktu 7 jam, jika kereta api lain menempuh jarak yang sama dalam waktu 8,5jam, makam kecepatan kereta api tersebut adalah?

3 Answers

Rating
  • Rinaldi
    7 years ago
    Favorite Answer

    Ini termasuk perbandingan berbalik nilai,

    85 km/jam = 7 jam

    ....................... = 8,5 jam

    caranya

    A/a = b/B

    85/a = 8,5/7

    85 x 7 = 8,5 x a

    a = (85 x 7) : 8,5 = 70 km/jam

    Source(s): Berpikir secara praktis, kritis, dan logis
  • salcomp
    Lv 7
    7 years ago

    85 * 7 = x * 8,5

    x = 85 * 7 / 8,5 = 70 km/jam

  • ?
    7 years ago

    85/7 = x/8,5

    tinggal cari x pake persamaan

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