Items related to The normal union arithmetic Volume 3; graded course
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. 1877 Excerpt: ...what will 16 A. 80 P. cost at a rate of $25 less an acre? Ans. $1105.50. 24. If I7 men can mow a field in 9 days, how long would it take to reap half of it if 5 men refuse to labor? Ans. 6f days. 25. A failed and could pay only 75 cts. on each dollar he owed; how much did C receive, whom he owed $1968? Ans. $1476. 26. If a three-cent loaf weigh 9 ounces when flour is $6 a barrel, how much should it weigh when flour is $8 a barrel? Ans. 6f oz. 27. A lent me $560 for 10 months; how long should I lend him $800 to reciprocate the favor? Ans. 7 mo. 28. A has grain worth $1.12-a bushel, and B has flour worth $6.25 a barrel; now if in an exchange A puts his grain at $1.25 a bushel, what should B charge for his flour? Ans. $6.94. 29. Two cog-wheels, one having 28 and the other 20 cogs, run together; in how many revolutions of the larger wheel will the smaller gain 12 revolutions? Ans. 30. 30. A garrison of 2400 men has provisions sufficient to last them 20 days, at the rate of 1 Ib. a day; how large a reinforcement could be received for the time if the allowance be reduced to 15 oz. a day? Ans. 1440 men. COMPOUND PROPORTION. 566. A Compound Proportion is a proportion in which one or both ratios are compound. are examples of compound proportion. PRINCIPLES. 1. The product of the simple ratios of the first couplet equals the product of the simple ratios of the second couplet. For, the value of a compound ratio is the product of the simple ratios, and these are equal, since a proportion expresses the equality of ratios. Thus, from the second of the above proportions we have, iXT7:j=T55 2. The product of all the terms in the extremes equals the product of all the terms in the means. For, from the nature of proportion, we have from the proportion above, T4j X-Ji=-fs X f...
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- PublisherRareBooksClub.com
- Publication date2012
- ISBN 10 1130792471
- ISBN 13 9781130792478
- BindingPaperback
- LanguageEnglish
- Number of pages62
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