Asked by roze
3 buah buku dan 2 batang pen berharga RM135 manakala 2 buah buku dan 3 batang pen berharga RM 140.Hitung harga bagi setiap barang itu.
Answers
Answered by
Reiny
3 books and 2 pens worth RM135 while 2 books and 3 pens worth RM 140. Calculate the price for each item.
3b + 2p = 135 -- times 3 --> 9b + 6p = 405
2b + 3p = 140 -- times 2 --> 4b + 6p =280
subtract them: 5b = 125
b = 25
sub back into one of the first equations to get p
3b + 2p = 135 -- times 3 --> 9b + 6p = 405
2b + 3p = 140 -- times 2 --> 4b + 6p =280
subtract them: 5b = 125
b = 25
sub back into one of the first equations to get p
Answered by
Huda💘
Michelle menggunakan simpanannya untuk membeli 300 unit amanah saham
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