Cost of book is 3 more thane 4 times the cost of a pen. Cost of a pen and a book together is 43.Whatis the cost of a pen and that of a book?
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Cost of Pen = x cost of book is 3 times pen = 3x x + 3x = SH2400 4x= SH2400 x = SH600 = cost of pen 3x = SH1800 ...
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The cost of a pen is 3 times the cost of a pencil The cost of 4 pencils and 3 pens is $9.75. What is the cost of a pencil?
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