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A book shop has a mail-order service. One has to send the price of the books and 20 rupees postage. To get a book priced 150 rupees, how much should one send? If one sends 200 rupees, he would get books worth how much? If we use b for the price of books and s for the postage, in what all ways can we write the relation between these amounts? |
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Answer» A book shop has a mail-order service. One has to send the price of the books and 20 rupees postage. To get a book priced 150 rupees, how much should one send? If one sends 200 rupees, he would get books worth how much? If we use b for the price of books and s for the postage, in what all ways can we write the relation between these amounts? |
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