# Treatise on practical arithmetic, with book-keeping (Google eBook)

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Page 25 - Yard, when compared with a Pendulum vibrating Seconds of Mean Time in the Latitude of London in a Vacuum at the Level of the Sea...
Page 173 - Multiply each payment by its term of credit, and divide the sum of the products by the sum of the payments ; the quotient will be the average term of credit.
Page 69 - Multiply the whole number by the numerator of the fraction, and divide the product by the denominator ; or divide the whole number by the denominator of the fraction, and multiply the quotient by the numerator.
Page 223 - Person to another, requiring him to pay a certain Sum of money to a third Person, or to his order, and that either on demand or at a specified time.
Page 17 - Multiply the whole number by the denominator of the fraction, and to the product add the numerator for a new numerator, under which draw a line and place the denominator.
Page 177 - If the errors are alike, divide the difference of tire products by the difference of the errors, and the quotient will be the answer. 5. If the errors are unlike, divide the sum of the products by the sum of the errors, and the quotient will be the answer.
Page 119 - A ladder 40 feet long may be so placed that it will reach a window 33 feet high on one side of the street, and by turning it over without moving its foot it will reach a window 21 feet high on the other side. Find the breadth of the street.
Page 28 - Ibs. avoirdupois weight of distilled water, weighed in air at the temperature of 62° of Fahrenheit's thermometer, the barometer being at 30 inches...
Page 179 - From the preceding, it appears, that the sum of the extremes is equal to the sum of any other two terms equally distant from the extremes. KEM ARK. — Since i=a...
Page 178 - When first the Marriage Knot was tied Between my Wife and Me My age did hers as far exceed As three times three does three. But when Ten years and half ten Years We man and wife had been Her age came up as near to mine As eight is to sixteen. Now tell me I pray What were our Ages on our Wedding Day? This rather curiously recalls the "How Old Is Ann?