The National Arithmetic on the Inductive System: Combining the Analytic and Synthetic Methods : Forming a Complete Course of Higher ArithmeticRobert S. Davis & Company, 1863 - 444 σελίδες |
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Σελίδα 237
... PROPORTION . 332. A PROPORTION is an equality of ratios . Any four numbers are in proportion , when the ratio of the first to the second is the same as that of the third to the fourth . Thus , the ratios 9 3 and 6 : 2 , being equal to ...
... PROPORTION . 332. A PROPORTION is an equality of ratios . Any four numbers are in proportion , when the ratio of the first to the second is the same as that of the third to the fourth . Thus , the ratios 9 3 and 6 : 2 , being equal to ...
Σελίδα 238
... proportion the product of the two extremes is equal to the product of the two means . Thus , the proportion 16820 : 10 may be expressed 8. Now , if we re- = duce these ... proportion , or state the question , we make 238 PROPORTION .
... proportion the product of the two extremes is equal to the product of the two means . Thus , the proportion 16820 : 10 may be expressed 8. Now , if we re- = duce these ... proportion , or state the question , we make 238 PROPORTION .
Σελίδα 239
... proportion , or state the question , we make the 243 miles the third term , because it is of the same kind as the required fourth term , and as from the nature of the question the latter must be greater than the third term , we make the ...
... proportion , or state the question , we make the 243 miles the third term , because it is of the same kind as the required fourth term , and as from the nature of the question the latter must be greater than the third term , we make the ...
Σελίδα 240
... . 18. If 7 of a yard cost of a dollar , what will of a yard cost ? Ans . $ 0.48 . 19. What must be paid for 21A . 3R . 20p . of land , if 36A . 3R . cost $ 1260 ? Ans . $ 750 . 20. What is the value of 2000lb . of standard 240 PROPORTION .
... . 18. If 7 of a yard cost of a dollar , what will of a yard cost ? Ans . $ 0.48 . 19. What must be paid for 21A . 3R . 20p . of land , if 36A . 3R . cost $ 1260 ? Ans . $ 750 . 20. What is the value of 2000lb . of standard 240 PROPORTION .
Σελίδα 241
... 40 minutes , and the third in 75 minutes ; in what time would they all empty it ? Ans . 11m . 19 sec . 35. A can mow a certain field in 5 days , and B can mow it in 6 days ; in what time would both of N 21 PROPORTION . 241.
... 40 minutes , and the third in 75 minutes ; in what time would they all empty it ? Ans . 11m . 19 sec . 35. A can mow a certain field in 5 days , and B can mow it in 6 days ; in what time would both of N 21 PROPORTION . 241.
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12 per cent acres amount annexed annuity Arithmetic avoirdupois barrels becomes due bill bought bushels carats cask ciphers circumference column common denominator common fraction composite number compound interest compound numbers contain continued fraction cost cube root diameter difference discount dividend division dollars duodecimal equal exactly divide EXAMPLES expressed decimally feet long figures gain gallons given number grains greatest common divisor Hence hogshead hundred improper fraction inches last term least common multiple longitude lowest terms measure meters miles minuend mixed number months multiplicand Multiply NOTE number denoting number of days number of terms obtain paid payable payment pounds premium present worth prime factors prime number principal quantity quotient rate per cent ratio received Reduce remainder repetend rods RULE SECOND OPERATION shillings side simple numbers sold square root subtract subtrahend tens third thousand tons weight whole number write yards