(6) EDWARD HARMAN, Esq.

Bought of Chas. Ormond & Co., London, April 4, 1843.

Promiscuous Examples for Exercise.

61. A gentleman bought 9 silver tankards, weighing 2 lbs. 10ozs. 15 dwts. each; what was the weight of the whole?

62. A gentleman resident in London had to cross Waterloo Bridge twice a day for ten years, without intermission (except Sundays), and paid one penny each time of crossing; how many times did he cross the bridge, and how many pence did he pay to the gate-keepers in the time, reckoning 6 days to the week, and 52 weeks to the year?

63. The population of England increases at the rate of 1000 persons in a day; what amount is that in the year, of 365 days?

64. What will the wages of the men employed in building the new Parliament Houses,

at Westminster, amount to in one year, supposing there are 40 men employed, and their wages average 5s. per day, reckoning 6 days to the week, and 52 weeks to the year

65. The length of one column of letter press in the "Times" paper measures 21 inches, and there are frequently 96 columns in one paper, what number of yards in length would 20,000 copies extend if each column were cut up and placed in a straight line?

66. If the wheel of a machine which has 96 teeth move another wheel which has 8 teeth; how many revolutions will the smaller wheel make in 120 revolutions of the larger, and how many revolutions will be made by both wheels in 365 days, supposing the larger one revolves on its axis 4 times in 24 hours?

67. A person employed a certain number of men to build a wall, likewise 6 boys, to whom he paid 6 shillings per week, the number of men was as many as half the number of shillings which he paid the boys weekly, and their wages were 17. 58. each per week; what number of

men did he employ, and what were his weekly expenses to all the men and boys?

68. Under the new Post Office regulation, the average number of letters posted is 750 a minute, assuming that the offices are open 12 hours a day; what number is posted in a year of 365 days, and how much money is paid for the stamps, reckoning each letter at one penny?

CONVERSATION XVIII.

ON COMPOUND DIVISION.

CONSTANTIA.

I suppose you are quite ready to enter upon the next rule, Lavinia.

LAVINIA.

Yes; quite. I have my pencil sharpened, and my slate in preparation.

CONSTANTIA.

The rule, Compound Division, shows how to divide any given compound number into a proposed number of equal parts, or to find how often one number is contained in another, of different denominations.

RULE. Place the divisor on the left of the dividend. Divide the highest denomination of the dividend by the divisor; and if there be any remainder, reduce it to the next lower deno

mination, and add it to the parts of the same name in the dividend; divide this number as before, and so on with the whole of the dividend.

If the divisor be under 12, or a composite number, you may perform the work by short division; but if the divisor consists of an odd number or a large one, it must be done by long division.

If the divisor contains a fraction and whole number, multiply both the divisor and dividend by the under figure of the fraction, and for the divisor add in the upper figure of the fraction and proceed as above, which I shall show you by example.

Proof.-Multiply the quotient by the divisor and add in the remainder, if any.