Junior High School Mathematics Volume 1 Book PDF, ePub eBook

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Book Descriptions:
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...year. What was the per cent of increase? 19. Practice until you can write the sums on page 5, in the time indicated. 20. A square piece of cloth whose edge is 1 yd. shrinks until its edge is 35 in. By what per cent is the edge decreased? By what per cent is the area decreased? 21. One gram of fat produces 9 calories of heat; protein and carbohydrate produce each 4 calories per gram. Find the number of calories produced by a kilogram of beefsteak, a kilogram of bread, and a liter of milk. See problem 7, page 82. A liter of milk weighs 1032 grams. 22. An agricultural experiment station reports the following data from a farm in Indiana concerning the profits from poultry in the two successive years: Find for each year, (a) the total income, (6) the average profit per hen, (c) the profit per hour on the labor, and (d) the rate per cent of increase of total profit the second year over the first. CHAPTER VI INTEREST 48. Meaning of interest. Money paid for the use of money is called interest. The amount of interest to be paid depends upon the amount of money borrowed and the length of time it is kept. It is usual to charge as interest an agreed upon per cent of the money borrowed for each year that it is kept. Henry wants to buy a plow to cost $50. He borrows the money from William Doyle and agrees to return the money at the end of one year and to pay 6% of the amount borrowed as interest for its use for the year. How much interest must he pay? How much money must he pay Mr. Doyle at the end of the year? If he borrows the money for two years, how much interest must he pay? If for 6 months? The per cent to be paid each year is stated as a certain per cent per annum and this per cent is called the rate of interest. Per annum means " for a...

Junior High School Mathematics Volume 1 by Edson Homer Taylor

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