A System of Arithmetic: Reprinted from the Mathematical Text-book

Published and sold by William Hilliard, 1812 - 248 σελίδες

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Σελίδα 129 - A wall, to be built to the height of 27 feet, was raised to the height of 9 ft. by 12 men in 6 days; how many men must be employed to finish the wall in 4 days at the same rate of working ? Ans. 36 men.
Σελίδα 210 - Find the present worth of each year by itself, discounting from the time it falls due, and the sum of all these present worths will be the present worth required.
Σελίδα 37 - Pound /6 28 Pounds 1 Quarter qr 4 Quarters 1 Hundred weight cwt 20 Hundred weight 1 Ton...
Σελίδα 193 - RULE.—Multiply each payment by the time at which it is due; then divide the sum of the products by the sum of the payments, and the quotient will be the equated time.* • , EXAMPLES.
Σελίδα 231 - RULE. 1. Find all the different forms of combination of all the given things, taken as many at a time, as in the question^ by problem 5, 2.
Σελίδα 231 - ... 1. Place the things so that the greatest indices may be first, and the rest in order. 2. Begin with the first letter and join it to the second, third, fourth, &c. to the last.
Σελίδα 239 - What difference is there between the interest of 500Z. at 5 per cent, for 12 years, and the discount of the same sum at the same rate, and for the same time ? Ans.
Σελίδα 172 - The difference of the extremes divided by the number of the terms less 1, gives the common difference; consequently, the same divided by the common difference must give the number of terms less 1 : hence, this quotient augmented by 1, must give the number of terms.
Σελίδα 56 - Begin at the left hand, and divide each denomination by the divisor, setting down the quotients under their respective dividends. But if there be a remainder after dividing any of the denominations except the least, find how many of the next lower denomination it is equal to, and add it to the number, if any, which was in this denomination before, then divide the sum as usual, and so on, till the whole is finished.
Σελίδα 183 - Ans. 59048. 4. What debt may be discharged in a year, or twelve months, by paying $1 the first month, $2 the second month...

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