Math, asked by sagarsahu9055, 1 year ago

harga 2 buah buku dan 3 buah pensil Rp 15.500 harga 5 buah buku dan 2 buah pensil Rp 19.500 jika ibu membeli 1 buah buku dan 5 buah pensil maka jumlah uang yang harus dibayarkan ibu adalah

Answers

Answered by pinky7857
2
Hey,

Here Is Your Answer

Book = A
pensiL = B

2 books + 3 pencils = 15,500
2 A + 3 B = 15,500
2 A = 15,500-3B
A = (15,500 - 3 B) ÷ 2
A = 7750-1,5B

5 A + 2 B = 19,500
5A = 19,500-2B
A = (19500-2B): 5
A = 3900-0,4B

7750 - 1,5 B = 3900-0,4 B
7750 - 3950 = -0,4 B + 1,5 B
3850 = 1.1 B
B = 3850 1 1.1
B = 3500

2A + 10500 = 15500
2A = 15500-1000
2A = 5000
A = 2500



10 books + 5 pencils
10 A + 5B
10. 2500 + 5. 3500
25000 + 17500
42500
Similar questions