Pak Darmo berjualan bubur ayam setiap hari Senin – Jumat dengan modal Rp400.000,00 per hari. Satu porsi bubur ayam dijual Rp10.000,00 dan air mineral Rp4.000,00 per botol. Pada hari Senin sampai dengan hari Kamis 10% keuntungan Pak Darmo disumbangkan untuk Panti Asuhan Maju Bersama, sedangkan pada hari Jumat seluruh keuntungan disumbangkan untuk panti asuhan tersebut. Berikut adalah data penjualan yang dicatat oleh Pak Darmo selama satu minggu: Senin Selasa Rabu Kamis Jum'at Bubur 90 85 95 80 10

Let's call the Ameri-Mobile activation fee A, and the Cell-U-Later activation fee B. Let's call the Ameri-Mobile monthly payment c, and the monthly Cell-U-Later monthly payment d Let's call n the number of months
The cost of the Ameri-Mobile (in business, that's often called "total cost of ownership) is then: (a + c * n) The cost of the plan after n months is the activation fee, plus each monthly payment times the number of months paid The cost of Cell-U-Later is, similarly: (b + d * n)
You can even find out how many months you'd need to keep the plan for each plan to be equal (the longer you keep the plan, the better is the Cell-U-Later plan, because the activation fee distributes across a higher number of months), by plugging in numbers and solving this equation for n (but that's a bit more advanced): a + c n = b + d n

Answered by papillonc | 2024-06-10

The algebraic expressions for the two cell phone plans are defined as follows: Ameri-Mobile's total cost is C A ​ = A + c × n and Cell-U-Later's total cost is C B ​ = B + d × n . These expressions help Ismael understand his costs over time and identify potential savings based on the planned duration of usage. Additionally, he can determine the point where the costs of both plans are equal by solving the equation A + c × n = B + d × n .
;

Answered by papillonc | 2024-12-26

Jawab:Keuntungan seminggu Rp 4.410.000,-Penjelasan dengan langkah-langkah:Modal = Rp 400.000,- / hariBubur ayam = Rp 10.000,- + Air Rp 4.000,- = Rp 14.000,-Senin = 90 X Rp 14.000,- = Rp 1.260.000,-Selasa = 85 X Rp 14.000,- = Rp 1.190.000,-Rabu = 95 X Rp 14.000,- = Rp 1.330.000,-Kamis = 80 C Rp 14.000,- = Rp 1.120.000,-Jumat = 10 X Rp 14.000,- = Rp 140.000,- (Sumbang seluruhnya)Total Senin - Kamis = 1.260.000 + 1.190.000 + 1.330.000 + 1.120.000                                  = 4.900.000Sumbang 10% = 4.900.000 X 10% = Rp 490.000,-Jadi dalam seminggu yg disumbang = Rp 490.000,- + Rp 140.000,-                                                              = Rp 630.000,-Keuntungan = (Rp 4.900.000,- + Rp 140.000,-) - Rp 630.000,-                      = Rp 5.040.000 - Rp 630.000,-                      = Rp 4.410.000,-

Answered by takusahpanggil | 2025-07-16