Jawabanmu

2014-01-03T09:27:14+07:00
1. modal = M
tabungan sekarang = 2M
maka bunga = modal
Bunga = 5/100 . x/12 . Modal
Modal = 5/100 . x/12 . Modal
1 = 5/100 . x/12
100/5 = x/12
x = 1200/5 = 240 bulan = 20 tahun
2. Bunga = p/100 . n/12 . Modal
dimana n = dalam bulan
tabungan sekarang = Modal +  p/100 . n/12 . Modal
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2014-01-03T11:05:50+07:00
15.
5% x t = 100%
jelas bahwa t = 20 tahun

16.
modal setelah n tahun = =M(1+p\%)^n\\
=M(1+ \frac{p}{100})^n\\

17.
1.790.847,70=M(1+ \frac{p}{100})^n\\\\
1.790.847,70=1.000.000(1+ \frac{p}{100})^{10}\\\\
 \frac{1.790.847,70}{1.000.000} = (1+ \frac{p}{100})^{10}\\\\
1,7908477= (1+ \frac{p}{100})^{10}\\\\
 \sqrt[10]{1,7908477}= (1+ \frac{p}{100})\\\\
1,06= (1+ \frac{p}{100})\\\\
p=6
jadi bunganya  6% perbulan
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