Huda membeli 3kg rambutan dan 4kg salak seharga Rp.39.000,00 sedangkan fakih membeli 4kg rambutan dan 5kg salak seharga 50.000,00 jika isna membeli 7kg rambutan
Matematika
arjunariski
Pertanyaan
Huda membeli 3kg rambutan dan 4kg salak seharga Rp.39.000,00 sedangkan fakih membeli 4kg rambutan dan 5kg salak seharga 50.000,00 jika isna membeli 7kg rambutan dan 12kg salak berapakah uang yg harus di bayarkan?
2 Jawaban
-
1. Jawaban trojanhrx
3r + 4s = 39000 |×4| 12r + 16s = 156000
4r + 5s = 50000 |×3| 12r + 15s = 150000
= 1s = 6000
3r + 4 (6000) = 39000
3r = 15000
r = 5000
= 7(5000) + 12(6000)
= 35000 + 72000
= 107000 -
2. Jawaban Ibnumalik1508
3r + 4s = 39000 |×4| 12r + 16s = 156000
4r + 5s = 50000 |×3| 12r + 15s = 150000
= 1s = 6000
3r + 4 (6000) = 39000
3r = 15000
r = 5000
= 7(5000) + 12(6000)
= 35000 + 72000
= 107000