Denominate Numbers-Weight. 349. The standard unit of weight in common use is a pound Avoirdupois. The abbreviation for 1 hundredweight (100 lb) is cwt. 1. Of 2650 lb. coal at $5.50 per ton. 2. Of 2650 lb. oats at 24¢ a bushel. 3. Of 3330 lb. wheat at 80¢ a bushel. 4. Of 4650 lb. potatoes at 42¢ a bushel. (a) Find the sum of the four results. *This means the amount of ear corn required to make bushel of shelled corn. 1. Of 2560 lb. hay at $7.50 per ton. 3. Of 2 tons meal at of a cent a pound. (a) Find the sum of the five results. Find the cost 6. Of 2140 lb. oats at 24¢ a bushel. (b) Find the sum of the five results. Find the cost 11. Of 520 lb. clover seed at $6.30 a bushe.. Find the approximate weight 16. Of a barrel of kerosene. 17. Of 1 quart of milk. 18. Of the oats that will fill a bin that is 4 ft. by 4 ft by 9 ft. 19. Of the water that will fill a tank that is 2 ft. by 2 ft. by 12 ft. 20. Of a five-gallon can of kerosene. Denominate Numbers-Weight. 350. Troy weight is used in weighing gold, silver, and 351. Apothecaries' weight is used in mixing medicines and in selling them at retail. NOTE 1.—The pound Troy and the pound Apothecary are equal, each weighing 5760 grains. The pound Avoirdupois weighs 7000 Troy or Apothecary grains. NOTE 2.-The ounce Troy and the ounce Apothecary are each 480 grains; the ounce Avoirdupois is 4371⁄2 grains. QUERY.-Which is heavier, a pound of feathers or a pound of gold? An ounce of feathers or an ounce of gold? PROBLEMS 1. Change 5 lb. Avoirdupois weight to pounds, ounces, etc., Apothecaries' weight. 2. How many 5 gr. powders can be made from one Avoirdupois ounce of quinine? 3. One Avoirdupois ton of gold is how many Troy pounds? 4. Twenty-four Troy pounds equal how many Avoirdupois pounds? |