Perhatikan soal berikut!

<p>Jawaban yang tepat adalah C. 11.000</p><p>&nbsp;</p><p>Pembahasan :</p><p>15 tahun = 365 hari x 15 tahu = 5.475 hari</p><p>&nbsp;</p><p>Waktu &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Lama mengelilingi bumi</p><p>5.475 hari &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 86.500 kali</p><p>690 hari &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n kali</p><p>&nbsp;</p><p>5475/690 = 86500/n</p><p>n = (690 x 86.500)/5.475</p><p>&nbsp; &nbsp; = 59.685.000/5.475</p><p>&nbsp; &nbsp; = 10.901 kali</p><p>&nbsp; &nbsp; = 11.000 kali (dibulatkan)</p><p>Jadi, kosmonot itu terbang mengelilingi bumi selama 11.000 kali</p>