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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:

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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:

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Changing per cents to equivalents.

Since 5%=.05=180=26, these expressions may be called equivalents.

1. Give the fractional and decimal equivalents for 10%; 6%; 4%; 20%; 25%.

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8. Change the fractions,,, to their equivalent decimals and per cents; also, †, §, J.

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Write the equivalents of the following in decimals, thus: 1%=.01; 32% = .32; 1% = .001; etc.

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Finding a given per cent of a number.

Recite the following thus: Look at "66%," think "3":

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1. A man had 100 cows and sold 25% of them. How many did he sell?

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8. John earns $21.60 per month, and spends 75% for clothes. How much do his clothes cost him?

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