Matematika

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12-14 pakai cara ya ^^
12-14 pakai cara ya ^^

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2 Jawaban

  • 12. 42000 : 7 = 6000
          Uang Isti 6 x 6000 = 36000
          Jumlah uang Isti dan Joni = 42000 + 36000 = Rp. 78000


  • [12]. Jumlah Uang Mereka = 11/7 x 42.000
    Jumlah Uang Mereka = 66.000,00
    The correct answer is B. Rp66.000,00
    ------------------------------------------------------------------------------------------------------
    [13]. Jumlah Kelereng = 14/4 x 28
    Jumlah Kelereng = 98
    The correct answer is A. 98
    ------------------------------------------------------------------------------------------------------
    [14]. 
    [tex]\frac{1}{n} = \frac{1}{20} + \frac{1}{30}[/tex]
    [tex]\frac{1}{n} = \frac{3}{60} + \frac{2}{60}[/tex]
    [tex]\frac{1}{n} = \frac{5}{60}[/tex]
    n = [tex] \frac{60}{5} [/tex]
    n = 12
    The correct answer is C. 12

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