Rainey's Improved Abacus: An Explanatory Treatise on the Theory and Practice of Arithmetic and Mensuration ; in which the General Principles Involved in Practical Calculations are Thoroughly Elucidated and Illustrated by Numerous Analytic and Abbreviated Examples
E. D. Truman, 1849 - 312 σελίδες
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Rainey's Improved Abacus: An Explanatory Treatise on the Theory and Practice ...
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20 per cent according acres added allowed amount ascertain becomes bushel calculations called cause ciphers circle cloth commission consequently contained cord cost cost price cubic decimal deducted demand denominator diameter dimensions DIRECTIONS discount divided divisor dollars duty effect equal feet figure foot former four fraction gain gallons give given Hence hundredths inches interest invested length less lose loss means measure method miles mills months multiplied necessary obtained operations opposite paid payment pounds practical premium present principal profit proportion proven quantity question ratio reduced relations remainder result root rule selling separate share side simple sold specified square statement subtract Suppose supposition term of answer thick tion twice unit variety weight whole wide width worth yards
Σελίδα 46 - But if any payments be made before one year's interest hath accrued, then compute the interest on the principal sum due on the obligation, for one year, add- it to the principal, and compute the interest on the sum paid, from the time it was paid up to the end of the year; add it to the sum paid, and deduct that sum from the principal and interest, added as above...
Σελίδα 45 - If the payment be less than the interest, the surplus of interest must not be taken to augment the principal; but interest continues on the former principal until the period when the payments, taken together, exceed the interest due, and then the surplus is to be applied towards discharging the principal; and interest is to be Computed on the balance, as aforesaid.
Σελίδα 46 - Compute the interest to the time of the first payment ; if that be one year or more from the time the interest commenced, add it to the principal, and deduct the payment from the sum total If there be after payments made, compute the interest on the balance due to the next payment, and then deduct the payment as above ; and, in like manner, from one payment to another, till all the payments are absorbed; provided the time between one payment and another be one year or more.
Σελίδα 231 - ... divide this last product by 95, the quotient whereof shall be deemed the true contents or tonnage of such ship or vessel; and if such ship or vessel be...
Σελίδα 60 - A hare starts 12 rods before a greyhound, but is not perceived by him till she has been up 45 seconds ; she scuds away at the rate of 10 miles an hour, and the dog...
Σελίδα 231 - ... take the depth from the under side of the deck plank to the ceiling in the hold, then multiply and divide as aforesaid, and the quotient shall be deemed the tonnage.
Σελίδα 230 - If the vessel be double-decked, take the length thereof from the fore part of the main stem, to the after part of the stern post, above the upper deck"; the breadth thereof at the broadest part above the main wales, half of which breadth shall be accounted the depth of such vessel, and then deduct from the...
Σελίδα 46 - ... from the time they were paid to the time of settlement, and deduct the sum of these several amounts from the amount of the principal.
Σελίδα 162 - If a footman travel 240 miles in 12 days, when the days are 12 hours long; how many days will he require to travel 720 miles, wh-jn the days are 16 hours long?