Orton's Lightning Calculator, and Accountant's Assistant: The Shortest, Simplest, and Most Rapid Method of Computing Numbers, Adapted to Every Kind of Business, and Within the Comprehension of Every One Having the Slightest Knowledge of Figures

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T.K. Collins, 1866 - Mathematics - 194 pages
 

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Page 76 - Thou shalt not lend upon usury to thy brother; usury of money, usury of victuals, usury of any thing that is lent upon usury: unto a stranger thou mayest lend upon usury; but unto thy brother thou shalt not lend upon usury...
Page 179 - OF TIME. 60 Seconds = 1 Minute 60 Minutes «= 1 Hour 24 Hours => 1 Day 7 Days = 1 Week 28 Days =• 1 Lunar Month...
Page 179 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Page 78 - If the time consists of years, multiply the principal by the rate per cent., and that product by the number of years. EXAMPLE 1.
Page 92 - To find the interest of any sum at 6 per cent, per annum for any number of months and days.
Page 128 - ... broad; what length must a ladder be to reach from the outside of the ditch to the top of the castle?
Page 92 - NOTE. — Dividing the days by 3 reduces them to the tenth of months. To find the the interest of any sum at 6 per cent. per annum for any number of days.
Page 142 - How**many acres are in a lot of land which is 40 rods long, and 30 rods wide at one end, and 20 rods wide at the other ? 30+20 =25 rods, mean width. 2 Then, 25x40...
Page 135 - For the 8th, take the square root of the 4th root. For the 9th, take the cube root of the cube root.
Page 152 - RULE. Multiply half the diameter by half the circumference, and the product is the area...

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