 If A and В together can perform a piece of work in 8 days, A and С together in 9 days, and В and С in 10 days; how many days would it take each person to perform the same work alone?  The elements of algebra - Page 223by Andrew Bell (writer on mathematics.) - 1839Full view - About this book
 | James Dodson - Algebra - 1775 - 356 pages
...A.*-f2_JL = 306 by queilion; . 3 *3 _ ,, Anu 4tne root thereof) - ^=9. QUEST. CV. If A and В together, can perform a piece of work in 8 days ; A and С together in 9 days.; and В and С in ю days . How many days will it take each perfon alone to perform the fame work ? Suppofe A could... | |
 | John Bonnycastle - 1782 - 272 pages
...time would they jointly produce the effeft а? А*Ш±££ит. а + b+с 26. If A and В together can perform a piece of work in 8 days ; A and С together in g days ; and В and С in lo days : How many days will it take each perfon to perform the fame work... | |
 | John Bonnycastle - Algebra - 1813 - 456 pages
...man, he wants 25 to fill up the square; bow many soldiers had he? Ans. 240OO 39. If A and в together can perform a piece of work in 8 days, A and с together in 9 days, and в and с in 10 days; how many days will it take each person to perform the same werk alone ? Ans. A 14^-j- days,... | |
 | Peter Nicholson - Mathematics - 1825 - 1046 pages
...equal to each other. Ans. The parts are 18, 22, 10, and 40, respectively. 33. If A and В together perform a piece of work in 8 days ; A and С together in 9 days; and В and С in 10 days ; how many days will it take each person to perform the same work ? Ans. A 14-JA days, В... | |
 | John Radford Young - Algebra - 1832 - 408 pages
...Example of a Question producing a Simple Equation involving three unknown Quantities. QUESTION. If A and В can perform a piece of work in 8 days, A...in 9 days, and В and С together in 10 days ; in how many days can each alone perform the same work ? Let the number of days be x, t/, and z, respectively... | |
 | John Bonnycastle - Algebra - 1837 - 296 pages
...he wants 25 to fill up the square ; how many soldiers had he ? Ans. 24000. 36. If A and в together can perform a piece of work in 8 days, A and с together in 9 days, and в and с in 10 days, how many days will it take each person to perform the same work alone. Ans. A 14J£ days,... | |
 | John Radford Young - Algebra - 1838 - 368 pages
...Algébrique. (62.) QUESTIONS PRODUCING SIMPLE EQUATIONS INVOLVING THREE UNKNOWN QUANTITIES. QUESTION I. If A and В can perform a piece of work in 8 days, A and C together in 9 days, and В and C together in 10 days ; in how many days can each alone perform the... | |
 | John Radford Young - 1839 - 332 pages
...PRODUCING SIMPLE EQUATIONS INVOLVING THREE UNKNOWN QUANTITIES. QUESTION I. If A and В can perform a-piece of work in 8 days, A and С together in 9 days, and В and С together in 10 days ; in how many days can each alone perform the same work ? Let the number of days be x, y, and z, respectively... | |
 | John D. Williams - Algebra - 1840 - 634 pages
...whence z=154 ' and, consequently, з? -\- 284 = 24000, the whole number of men. 48. If A and В together can perform a piece of work in 8 days, A and С together in 9 days, and В and С in 10 days, how many days will it take each person to perform the same work alone? Ans. A 14J| days,... | |
 | Scottish school-book assoc - 1845 - 444 pages
...from the number 198 be subtracted, the digits will be inverted. Ans. 432. 10. If A and В together cnn perform a piece of work in 8 days, A and С together...days, in what time will each of them perform it alone? QUADEATIC EQUATIONS. 80. QUADRATIC -EQUATIONS may be divided into two kinds, namely, such as contain... | |
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