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Rehan buys a book and a pen and pays Rs 50 for both the book costs Rs 8 more than twice the cost of the pen find the cost of the book?
Wiki User
∙ 12y ago
b+p=50
2p+8=b
b-2p = 8
b+p = 50
(multiply bottom by two)
b - 2p = 8
2b + 2p = 100
(add)
3b = 108
108/3 = 36 = b
Book = 36 Rs
Wiki User
∙ 12y ago
MRS Waqas
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