 | George Peacock - Algebra - 1842 - 426 pages
...of the expressions to their most simple forms at the moment of their first formation*. (3) Two men A and B can do a piece of work in 12 days: but /"' alone can do it in 30 days : in what number of days can iK' the work alone '* The following... | |
 | Joseph Ray - Algebra - 1848 - 252 pages
...the shares of A and B, by 30 dollars; what is the share of each? 17. If A and B can perform a certain work in 12 days, A and C in 15 days, and B and C in 20 days, in what time could each do it alone ? Aug. A 20, B 30, and C 60 days. 18. A number, expressed by three... | |
 | Joseph Ray - Algebra - 1848 - 250 pages
...what is the share of each ? .y 150 RAY'S ALGEBRA, PART FIRST. 17. If A and B can perform a certain work in 12 days, A and C in 15 days, and B and C in 20 days, in what time could each do it alone? Ans. A 20, B 30, and C 00 days. 18. A number, expressed by three... | |
 | Joseph Ray - Algebra - 1866 - 250 pages
...$20, may be all equal to each other. Ans. A $70, B $60, C $50. 12. If A and B can perform -a certain work in 12 days, A and C in 15 days, and B and C in 20 days, in what time could each do it alone? Ans. A 20, B 30, and C 60 days. ** 13. A number expressed by three... | |
 | Joseph Ray - Algebra - 1866 - 252 pages
...$20, may be all equal to each other. Ans. A $70, B $60, C $50. 12. If A and B can perform a certain work in 12 days, A and C in 15 days, and B and C in 20 days, in what time could each do it alone ? Ans. A 20, B 30, and C 60 days. 13. A number expressed by three... | |
 | Emerson Elbridge White - Arithmetic - 1870 - 350 pages
...the second shall have f as much as the first, and the third \ as much as the other two together. 194. A and B can do a piece of work in 12 days, B and C in 9 days, and A and C in 6 days : how long will it take each alone to do it? 195. A and B... | |
 | Philotus Dean - Arithmetic - 1874 - 472 pages
...how long will it take B, alone, to build it? Ans. 13 J days. 47. A, B, and C can reap a field in 10 days, A and C in 15 days, and B and C in 20 days ; in how many days could each alone reap it? Ans. A in 20 days, B in 30 days, and C in 60 days. 48.... | |
 | Education - 1878 - 446 pages
...8 and 11 years respectively. How much will each receive? Perform by analysis and by proportion. 30. A and B can do a piece of work in 12 days. B and C in 9 days, and A and C in 6 days. How long will it take each to do it ? GEOGRAPHY. 1. What... | |
 | Robert Johnston (F.R.G.S.) - 1877 - 326 pages
...6 ft. 6 in. deep, with lead which costs £l 8s. per cwt., and weighs 1 Ib. to 18 square inches. 6. A and B can do a piece of work in 12 days, A and С can do the same amount of work in 15, and B and С in 18 days: in what time could each do it separately?... | |
 | Albert Newton Raub - Arithmetic - 1877 - 348 pages
...what does he make if the note is discounted at 6%, no days of grace being allowed ? Ans. $20.80. 71. A and B can do a piece of work in 12£ days, B and C in 15 days, and A and C in 14 days : how many days will it take each alone to do it ? Ans.... | |
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A and B can do a piece of work in 12 days, B and C in 20 days, and A and C in 15 days. 
