The Western Calculator, Or, A New and Compendious System of Practical Arithmetic: Containing the Elementary Principles and Rules of Calculation in Whole, Mixed, and Decimal Numbers ...Johnston & Stockton, 1839 - 203 páginas |
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Página 59
... Multiply the first and second terms together , and divide the product by the third ; the quotient will be the answer , in the same name as the second . EXAMPLE . 1. If 20 men can build a wall SINGLE RULE OF THREE INVERSE . 59.
... Multiply the first and second terms together , and divide the product by the third ; the quotient will be the answer , in the same name as the second . EXAMPLE . 1. If 20 men can build a wall SINGLE RULE OF THREE INVERSE . 59.
Página 60
... wall in 12 days , how long will it require 40 men to build the " ame ? M. d . M. d . As 20 : 12 :: 40 Proo . As 6 M. : 40 :: d . 12 12 40 40 ) 240 ( 6 days . Ans . 12 ) 24 ( 20 men . 240 24 0 2. If 60 men can build a bridge in 100 days ...
... wall in 12 days , how long will it require 40 men to build the " ame ? M. d . M. d . As 20 : 12 :: 40 Proo . As 6 M. : 40 :: d . 12 12 40 40 ) 240 ( 6 days . Ans . 12 ) 24 ( 20 men . 240 24 0 2. If 60 men can build a bridge in 100 days ...
Página 64
... wall paper that is 3 qrs . wide and 11 yards long , will it require to paper the walls of a room that is 25 feet long , 15 wide , and 10 reduction of for doors and windows ? high , allowing a Ans . 10 22. The length of a wall being ...
... wall paper that is 3 qrs . wide and 11 yards long , will it require to paper the walls of a room that is 25 feet long , 15 wide , and 10 reduction of for doors and windows ? high , allowing a Ans . 10 22. The length of a wall being ...
Página 131
... longest side , and one of the others are given ; the square root of the difference of the squares of these two given sides will be the length of the remaining side . EXAMPLE . 1. The wall of a fortress is 36 SQUARE ROOT . 131.
... longest side , and one of the others are given ; the square root of the difference of the squares of these two given sides will be the length of the remaining side . EXAMPLE . 1. The wall of a fortress is 36 SQUARE ROOT . 131.
Página 132
... wall of a fortress is 36 feet high , and the ditch before it is 27 feet wide : it is required to find the length of a ladder that will reach to the top of the wall from the op- posite side of the ditch ? Ans . 45 feet . ladder 45 feet wall ...
... wall of a fortress is 36 feet high , and the ditch before it is 27 feet wide : it is required to find the length of a ladder that will reach to the top of the wall from the op- posite side of the ditch ? Ans . 45 feet . ladder 45 feet wall ...
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Términos y frases comunes
100 dollars 16 feet 25 cents 9 inches acres amount annum arithmetical arithmetical progression barrels breadth bricks bushels cask cents per pound cents per yard ciphers common denominator compound compound interest cost cube root cubic currency decimal diameter divide the product dividend divisor dollars 50 cents dolls duodecimals equal EXAMPLES Federal money feet 6 inches feet 9 feet long figures foot gain gallons geometrical progression given number given sum half hogshead hundred improper fraction inches broad inches long interest length lowest terms measure miles mills mixed number months Note number of terms operation ounces paid payment pence perches piece of ground principal proportion quantity quotient Reduce remainder rods rule of three SECTION shillings side sold solid content square root subtract superficial tare thickness timber vulgar fraction wall weight whole numbers
Pasajes populares
Página 29 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt...
Página 59 - A and B depart from the same, place and travel the same road ; but A goes 5 days before B, at the rate of 15 miles a day . B follows at the rate of 20 miles a . day } what distance must he travel to overtake A ? Ans. 300 miles RULE OF THREE INVERSE.
Página 54 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.
Página 115 - RULE. Multiply all the numerators together for a new numerator, and all the denominators for a new denominator, then reduce the new fraction to its lowest term by Case I.
Página 154 - 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...
Página 112 - To reduce a mixed number to an improper fraction, — RULE : Multiply the whole number by the denominator of the fraction, to the product add the numerator, and write the result over the denominator.
Página 111 - A proper fraction is when the numerator is less than the den'omiuator ; as i, f , ££, &c.
Página 135 - To extract the Square Root of a Vulgar Fraction. RULE, Reduce the fraction to its lowest terms, then extract the square root of the numerator for a new numerator, and the square root of the denominator for a new denominator.
Página 121 - Reduce compound fractions to simple ones, and mixt numbers to improper fractions ; then multiply the numerators together for a new numerator, and the denominators for. a new denominator.
Página 65 - If a footman travel 130 miles in 3 days, when the days are 12 hours long ; in how many days, of 10 hours each, may he travel 360 miles ? Ans. 9|f days. 5. If 120 bushels of corn can serve 14 horses 56 days, how many days will 94 bushels serve 6 horses?