25. Find the perimeter of the plot; of the lawn; of the garden; of the flower bed; of the walk. Find the area in square yards: 30. How much will it cost to fence the plot at $33 per rod? 31. How much will it cost to pave the walk at $1.55 per square yard? 32. How much will it cost to spade the flower bed at 5 cents per square yard? 33. How much will it cost to sod the lawn, excluding the flower bed, at $0.25 per square yard? 34. A board 16 ft. long contains 9 sq. ft. Find its width. 35. A room is 20 ft. long, 16 ft. wide, and 10 ft. high. How much will it cost to plaster the walls and ceiling at 20 cents a square yard? 36. How many gallons of water are there in a tank 12 ft. long, 8 ft. wide, and 6 ft. deep if it is half full? 37. Find the cost of 40 boards, each 14 ft. long, 18 in. wide, and 1 in. thick, at $20 per M. 38. A city 5 miles long and 3 miles wide is equal in area to how many farms of 160 acres each? 39. How many sods 16 in. square will be required to turf a lawn 106 ft. 8 in. long and 50 ft. wide? 40. What will be the cost of painting the outside of a house 48 ft. long, 30 ft. wide, and 20 ft. high, with 2 coats of paint, at 18 cents a square yard? PERCENTAGE Per cent means by the hundred or hundredths. for it is %. The sign We may express the per cent of a number either as a common fraction or a decimal. = = Thus, 6% 180: .06; 6% of 500 means 1 of 500, which equals 30; or, expressed decimally, .06 of 500 = 30. 2% of a number ineans 25% of a number means 100 or .02 of a number. or .25 of a number. 1. What term in common fractions corresponds to the number before the sign %? to the sign %? 2. What expresses the numerator and what indicates the denominator of the fractions represented by the following: |