5. If a flock of 60 hens averages 95 eggs a year each, what is the value of the eggs at 75 cents per dozen ? 6. What is the difference in the value of two hens, one laying 190 eggs a year and the other 90 eggs a year, if the average price of eggs is 75 cents per dozen ? 7. It is estimated that on the farm hens average 90 eggs a year each, but by careful selection an average of 140 eggs a year each could be obtained. What would this difference amount to for a year with a flock of 100 hens with eggs at 75 cents a dozen ? 8. A flock of 40 hens having a barnyard for a run are fed daily 3 lb. of wheat worth $ 2 a bushel. If the hens average 90 eggs a year each when eggs are worth 75 cents a dozen, what is the profit on the flock ? 9. A man paid out $ 66 in four weeks for feed for 360 hens. He sold 744 eggs at 60 cents a dozen during the first two weeks, 564 eggs at 75 cents a dozen during the third week, and 660 eggs at 85 cents a dozen the fourth week. His receipts were what per cent greater than the cost of the feed ? 10. If a cow averages daily 3 gallons of milk which is 4 per cent butter fat, how much butter does she produce per year ? (One gallon of milk weighs about 8.5 lb. One pound of butter fat will make about 14 lb. of butter.) 11. For $ 50 a man can buy a scrub cow that gives 14 lb. of milk per day, or for $ 120 a Jersey that gives 25 lb. of milk per day. If the first cow's milk is 2 per cent butter fat and the Jersey's 41 per cent, and the butter averages 70 cents a pound the year round, which cow will yield the greater per cent on the investment the first year ? 12. A farmer spent on a 12-acre field the following amounts: plowing, $ 30; harrowing and rolling, $ 22 ; seed, $ 16; drilling, $ 2.75; cutting and threshing, $ 27. His income from the field was 240 bushels of wheat at $ 2 a bushel, and $ 5 for pasturage. Find the balance in his favor. 13. A man had 8 acres planted to asparagus. The expense per acre for fertilizer was $ 40, for labor before cutting, $ 22, for cutting and bunching, $ 42. From each acre he cut 2000 bunches and sold them at 10 cents a bunch, allowing a commission of 3% for selling. What was his net return from the 8 acres ? 14. If a bushel of wheat weighs 60 lb., how many pounds of wheat will be produced on a field of 40 acres where the average yield is 24 bu. to the acre ? 15. After a heavy summer rain the water of a small stream was found to contain 1 lb. of sediment for every 500 gallons of water. If the rainfall was 1 in., the area of the basin drained 4 square miles, and the amount of water that ran off of what fell on the ground, how much soil did the rain carry away? 16. If the water running from a piece of planted land contained 1 lb. of sediment for every 250 gallons of water, how much soil was carried away from a 40-acre field after a 2-inch rainfall, į of the water running off ? 17. If seed corn averages 800 grains to the ear, how many ears will it take to plant an acre, 2 grains to the hill, when the rows are 3 ft. 8 in. apart, the hills in the row being the same distance apart? 18. If a farmer can increase the weight of each ear of corn 2 ounces by proper selection of seed, what will the increase amount to on a 40-acre field averaging 6500 stalks per acre, 1 ear for every stalk, when corn is selling for 95 cents per bushel ? 19. If 12 ears of selected seed corn will plant an acre, how many ears will it take to plant a field 40 rods by 60 rods ? 20. If a solution for spraying fruit trees and plants is made up of 4 lb. Lime 1 lb. 50 gal. what will 100 gallons of such a mixture cost if lime costs 25 cents a pound, copper sulphate 40 cents a pound, and Paris green 75 cents a pound ? 21. What is the cost per tree for the mixture of Ex. 22 if a sufficient amount to spray one tree is 21 gallons ? 22. If a solution for spraying is prepared, without the Paris green, but otherwise like the above, what will it cost per 100 gallons if sulphate of copper costs 40 cents a pound and lime 25 cents a pound ? 23. For a vineyard of 30 acres how many pounds of sulphate of copper and lime are necessary if 150 gallons of mixture will spray 1 acre? (See Ex. 22.) 24. If a man with a team at $ 6 a day can spray 4 acres in a day, what will it cost to spray 40 acres of grapes if the spraying mixture costs $6 per 100 gallons ? 25. The estimated value of a crop of grapes is $ 450 per acre. Thorough spraying costs $9 per acre. If, without spraying, 30 per cent of the crop is lost, what is the net value of spraying 10 acres ? 26. If 100 gallons of a lime-sulphur mixture for spray contains 40 lb. of lime and 30 lb. of sulphur, what will it cost for sufficient to spray 300 trees, 25 gallons being required for 9 trees, if sulphur is worth 25 cents per pound, lime 25 cents per pound, and the labor of preparing the mixture 75 cents per 100 gallons ? 27. How many pounds of Paris green are needed to spray 300 trees if 5 gallons of spray are used to a tree and every 150 gallons contain 1 lb. of Paris green? 28. What is the value of a 160-acre cotton-crop if two bales are raised to the acre and cotton is worth $.40 a pound ? A bale of cotton weighs 500 lb. 29. What is the value of the annual alfalfa crop on 160 acres if 165 tons can be raised on a 10-acre piece and alfalfa hay is worth $ 22 a ton ? 30. Determine the relative costs of fencing two 40-acre fields if one of them is square and the other is a rectangle whose length is twice its width. 31. If it requires a pull of 90 pounds to draw a ton over a good gravel road, and 2.4 times as much to draw the same load over a common dirt road, what pull is required for the dirt road ? 32. The gross returns from a 10-acre orange grove were $ 4560. The expenses were $ 922. What was the net return per acre ? 33. The yield for oranges by years is as follows: 34. Find the net profit per cow in a herd of 18 if the total received from cream in one year was $ 1902, and the expense of keeping the herd was as follows: Hay $ 324 72 144 126 |