Matematika

Pertanyaan

1. Harga barang (RP)             Diskon (%)           Harga setelah mendapat

                                                                                  jawaban (RP)

       8.500                                10%                     .......

       20.000                               ......                     15.200

       ........                                12,5%                   131.250

 

soal diatas semuanya harus mempunyai/memakai cara jalan!!

 

 

2 Jawaban

  • 100 - 10 = 90/100 x 8500 = 7650


  • harga diskon = 8.500 - 8.500 × [tex] \frac{10}{100} [/tex]
    harga diskon = 8.500 - 850
    harga diskon = Rp 7.650

    persentase = [tex] \frac{20.000 - 15.200}{20.000} [/tex] × 100%
    persentase = [tex] \frac{4.800}{20.000} [/tex] × 100%
    persentase = [tex] \frac{6}{25} [/tex] × 100%
    persentase = 24%

    harga awal = HA
    [tex] \frac{112,5}{100} [/tex] × HA = Rp 131.250
    HA = Rp 131.250 × [tex] \frac{100}{112,5} [/tex]
    HA = Rp116.666

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