p = price for a pair of leather shoes q = price for a pair of canvas shoes m = the total price for Andi's order
Andi's order: 5p + aq = m (1) p = 2.5q (2) 12.5q + aq = m (3) substitute (2) into (1) Andi's assistant's order: ap + 5q = m + m/3 (4) 2.5aq + 5q = 4m/3 (5) simplify (4) 7.5aq + 15q = 4m (6) (5) times 3 4aq + 50q = 4m (7) (3) times 4 3.5aq - 35q = 0 (8) subtract (7) from (6) q (3.5a - 35) = 0 (9) separate q for factorization q != 0 (10) price can't be 0 3.5a - 35 = 0 (11) this part of (9) is the cause of (9) a = 10 (12) easily obtained from (11) Therefore, ratio = 5:a = 5:10 = 1:2 -- Abu 'Abdirrahman, Ahmad Ridha bin Zainal Arifin bin Muhammad Hamim (l. 1400 H/1980 M) -- . * Posting yg berasal dari Palanta RantauNet, dipublikasikan di tempat lain wajib mencantumkan sumber: ~dari Palanta R@ntauNet http://groups.google.com/group/RantauNet/~ * Isi email, menjadi tanggung jawab pengirim email. =========================================================== UNTUK DIPERHATIKAN, melanggar akan dimoderasi: - DILARANG: 1. E-mail besar dari 200KB; 2. E-mail attachment, tawarkan di sini & kirim melalui jalur pribadi; 3. One Liner. - Anggota WAJIB mematuhi peraturan serta mengirim biodata! Lihat di: http://forum.rantaunet.org/showthread.php?tid=1 - Tulis Nama, Umur & Lokasi disetiap posting - Hapus footer & seluruh bagian tdk perlu dlm melakukan reply - Untuk topik/subjek baru buat email baru, tdk mereply email lama & mengganti subjeknya. =========================================================== Berhenti, bergabung kembali, mengubah konfigurasi/setting keanggotaan di: http://groups.google.com/group/RantauNet/
