Bu Sari menyimpan uang di bank sebanyak Rp18.050.000,00. Bank memberi bunga 12% per tahun. Pada akhir bulan kedelapan, sebanyak 80% tabungan diambil untuk membeli sebuah motor. Jika motor yang dibeli Bu Sari telah didiskon sebesar 5%, maka harga awal motor tersebut adalah

<p>Diketahui :</p><ul><li>Mo = 18.050.000</li><li>p = 12% per tahun</li><li>n = 8 bulan</li></ul><p>&nbsp;</p><p>Ditanya :&nbsp;</p><p>Harga awal motor?</p><p>&nbsp;</p><p>Pembahasan :</p><ul><li>Mencari bunga dan tabungan akhir (M₁)</li></ul><p>&nbsp; &nbsp; &nbsp; Bunga = n/12 x p/100 x Mo</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 8/12 x 12/100 x 18.050.000</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 1.444.000</p><p>&nbsp; &nbsp; &nbsp; Tabungan akhir (M₁) = 18.050.000 + 1.444.000</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 19.494.000</p><p>&nbsp;</p><ul><li>Menentukan uang buat beli motor</li></ul><p>&nbsp; &nbsp; &nbsp; Beli motor &nbsp;= 80% x 19.494.000</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 80/100 x 19.494.000</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 15.595.200</p><p>&nbsp;</p><ul><li>Harga motor setelah diskon</li></ul><p>&nbsp; &nbsp; &nbsp; &nbsp;Harga motor = (100% - 5%) x 15.595.200</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 95% x 15.595.200</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 95/100 x 15.595.200</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 14.815.440</p><p>&nbsp; &nbsp; &nbsp; &nbsp; Jadi harga motor Bu Sri setelah diskon adalah <strong>Rp. 14.815.440;&nbsp;</strong> &nbsp;&nbsp;</p>