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PRACTICE.

PRACTICE is a short method of working the Rule of Three; when the first term is a unit or one.

A TABLE OF ALIQUOT PARTS.

10s. Od. is of a pound.

6d. is of a shilling.

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CASE I.-When the given price is less than a penny.

RULE-If the given price be an aliquot part of a penny, as in the first example, divide the given number by that aliquot part, and the quotient will be the answer in pence, which divide by 12 and 20. If the given price be not an aliquot part, proceed as in example 2nd. Or, multiply the given number by the price, and divide the product by 4, 12, and 20.

EXAMPLES.

1. What is the value of 3652 yards, at d. per yard?

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2. What is the value of 4573 yards at åd. per yard?

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CASE II. When the price is a penny, or pence and farthings, and does not exceed one shilling.

RULE.-If the given price be an aliquot part of a shilling, as in example 1st, divide the given number by the aliquot part, and the quotient will be the answer in shillings, which divide by 20.

If the given price be not any aliquot part of a shilling, divide the given price into parts, taking the first an aliquot or even part of a shilling, and the remainder into aliquot parts of this and so on, as in example 2nd, and the sum of these quotients will be the answer in shillings, which divide by 20.

Or, multiply the given number by the price, and the product will be the answer in pence, which divide by 12 and 20.

EXAMPLES.

1. What is the value of 365 yards, at 2d. per yard?

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2. What is the value of 468 yards, at 51d. per yard?

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3. What is the value of 468 yards, at 54d. per yard?

4d. is 1)468

1 is 156

2,0)214 6

58 6 this is of the given number,
Į
1d, being of a shilling.

£10 14 6

4. 7546 at 1d. 13. Ans. £31 8 10 5. 7546 at 14d 14. Ans. £39 6 01 6. 54326 at 14d 15. Ans. £339 10 9 7. 6255 at 12d 16. Ans. £45 12 21

8. 2350 at 2d 17.

2711 at 2 d. 19.

3531 at 31d. 22. Ans. £47 16 3

4294 at 3 d. 23. Ans. £62 12 5

3500 at 3 d. 24. Ans. £54 13 9

3258 at 4d. 25. Ans. £54 6 0

2057 at 41d. 26.

1028 at 44d. 27. Ans. £19 5 6

Ans. £19 11 8 Ans. £36 8 61

9 7211 at 24d. 18. Ans. £67 12 03

10.

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2108 at 4 d. 28. Ans. £41 14 5

3121 at 5 Ans. £71 10 5

7520 at 5 d. Ans. £180 3 4

4271 at 6d. Ans. £106 15 6

3252 at 6d. Ans. £88 6

2710 at 63d. Ans. £76 4 4

2702 at 7 d. Ans. £84 89

2713 at 8d. Ans. £90 88

9873 at 8 d. Ans. £359 19 02

3211 at 5d. 29. Ans. £66 17 11

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31. 5725 at 104d. 33. Ans. £244 10 11

32. 7290 at 10 d. 34.

7255 at 114d. 35. 7973 at 11 d. Ans. £340 1 62 Ans. £390 6 10%

3755 at 11

Ans. £326 10 7 Ans. £179 18 6

CASE III. When the price is more than one shilling, but

less than two.

RULE.-Let the given number stand for shillings, and work for the pence and farthings as in the second case.

EXAMPLES.

1. What is the value of 961 yards, at 1s, Old. per yard.

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2. What is the value of 2436 yards at 1s. Od. per yard?

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3. What is the value of 468 yards, at 1s. 74d. per yard?

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Ans. £474 76

6326 at 1s 34d. Ans. £401 19 32

6. 676 at 1s. 14d. 10. 3290 at 1s.24d. 14. Ans. £37 6 5 Ans. £195 6 10

7. 707 at 1s. 1d. 11, 4627 at 1s.2 d.

Ans. £39 15 41 Ans. £279 10 11

15.

5272 at ls.3 d.

Ans. £340 9 8

990 at 1s. 2d. 13.
Ans. £57 15

7590 at 1s. 3d.

7102 at 1s.64d. 36. Ans. £540 0 11

16. 1627 at 1s.3 d. 26.
Ans. £106 15 5
17. 2914 at 1s. 4d. 27.
Ans. £194 5 4
18. 1635 at 1s.44d. 28.
Ans. £110 14 02
19. 7060 at 1s.44d. 29.
Ans. £485 7 6d.
20. 1375 at 1s.4 d. 30.
Ans. £95 19 31

1005 at 1s.83d. Ans. £86 17 93

2105 at 1s. 9d. Ans. £184 39

2570 at 1s.91d. Ans. £227 11 0

1627 at 1s.6 d. 37. Ans. £125 8 3 7924 at 1s.6 d. 38. Ans. £619 1 3 9272 at 1s. 7d. 39. Ans. £734 08 3605 at 1s.74d. 40. Ans. £289 3 01

21. 3726 at 1s. 5d. 31. 1155 at 1s.7 d. 41.
Ans £263 18 6 Ans. £93 16 101
22. 3625 at 1s.54d. 32.
Ans. £260 10 114
23. 2596 at Is.54d. 33.

Ans. £189 5 10

1252 at 1s.72d. 42. Ans. £103 07 1753 at 1s. 8d. 43. Ans. £146 1 8

1052 at 1s.9žd. Ans. £94 4 10 3753 at 1s.93d. Ans. £340 2 33

1072 at 1s.10d. Ans. £98 5 4 2600 at ls.104d. Ans. £241 0 10 2116 at 1s.10 d. Ans. £198 7 6

2906 at 1s.81d. 44. 2014 at 1s.103d. Ans. £245 3 10 Ans. £190 18 21⁄2

24. 3605 at ls.5 d. 34. Ans. £266 12 4

25. 3762 at ls. 6d. 35. 3552 at 1s.84d. 45. 7854 at ls.113d. Ans. £282 3 Ans. £303 8 Ans. £777 4 4

CASE IV. When the given price is any number of shillings.

RULE.-Multiply the given number by the price, and the product will be the answer in shillings, which divide by 20.

If the given price be any even number of shillings, multiply the given number by half the price, double the product of the first figure for shillings, and the remainder of the product will be pounds.

If the given price be any aliquot part of a pound, divide by that aliquot part, and the quotient will be the answer.

EXAMPLES.

1. What is the value of 366 yards, at 4s. per yard.

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