Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...@ 77. 18. A dealer sold a lot of rugs for $9360, which was more than they cost him. How much did they cost him? 19. The Maynard Co. bought 12 pianos for $3300, and sold each at $25 more than-£ of the cost. Find the selling price of each piano and the total gain. 20. In the settlement of an estate worth $ 62,500 there were lawsuits that cost the estate $43,750. What part of the estate was left to divide among the heirs? 21. The senior partner of a firm owned of the business, and sold of his share for $15,120. At that rate how much was the whole business worth? 22. What is the cost of 10 pieces of cloth containing 42£, 45f, 46, 44, 47, 48£, 481, 45, 47, and 43 yards, respectively, at 4 per yard? 23. A speculator bought 6000 bales of cotton averaging 500 pounds per bale, at 9.12 per pound. The market declined 4 points, or.04 of a cent, and he sold of the cotton; it then advanced 6 points, and he sold the rest. Did he gain or lose, and how much? 24. A man bought 4 car loads of corn, net weights 47,600 lb., 50,400 lb., 49,000 lb., and 53,200 lb., at 42 f per bushel of 56 pounds. He sold the first car load at 42 per bushel, the second at 43, the third at 43, and the fourth at How much did he gain? ANALYSIS BY EQUATIONS 396. How many pounds added to 25 pounds will give 30 pounds? The statement of the problem may be condensed to 25 pounds 25 pounds +? pounds or + x pounds or 25 + x = 30 30 pounds 30 pounds The letter x is only a convenient symbol for the unknown number (of pounds), or the number (of pounds) to be found. 25 and 30, on the other hand, are known numbers. 25 + x = 30, the briefest possible statement of the relation between the known and unknown numbers in the problem, is an equation. Finding the value of x is called solving the equation,...
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