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The cost of a pen is sh q while that of an exercise book is sh 30 less than thatof a pen. The cost of a rubber is a quarter that of an exercise book.If Shimulispent sh 129 to buy the three items, what was the price ol a pen? |
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Answer» cost of pen = qcost of exercise book = q - 30cost of rubber = (q-30)/4q + (q - 30) + (q - 30)/4 = 1299q - 150 = 5169q = 666q = 74 |
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