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" A and B can do a piece of work in 10 days, A and C in 12 days, and В and C in 20 days. "
A School Algebra - Page 172
by George Albert Wentworth - 1890 - 495 pages
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The principles and practice of arithmetic

John Hind - 1856 - 346 pages
...eleven times as much all working together at their respective rates ? Answer: 6hrs. 33min. 45sec. (25) A and B can do a piece of work in 10 days, A and C in 12 days and B and C in 14 days: in what times can they do it jointly and separately ? Answers: All together...
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Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

Roswell Chamberlain Smith - Arithmetic - 1856 - 334 pages
...which fire 5 rounds in 6 minutes, will kill 500 men in 1 hour at the same rate ? A. 20 cannon. 100. A and B can do a piece of work in 10 days, A and C in 13 days, and B and C in 14 days ; in what time can they do it jointly and separately ? A. Together,...
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Practical Arithmetic: Embracing the Science and Applications of Numbers

Charles Davies - Arithmetic - 1863 - 346 pages
...mow an acre of ground in 3 days, and B. in 2 days, how long would it take them both to mow it? 23. If A. and B. can do a piece of work in 10 days, and A. alone can do it in j.6 days, in what time can B. do it? 24. Multiply & by H| DECIMAL FRACTIONS....
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A Complete Arithmetic: Uniting Mental and Written Exercises in a Natural ...

Emerson Elbridge White - Arithmetic - 1870 - 350 pages
...days alone and is then assisted by the boy : how long will it take both to complete the work ? 51. A and B can do a piece of work in 10 days, and A, B, and C in 8 days : how long will it take C alone to do the work? 52. A and B can do £ of...
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Arithmetic for Schools

Barnard Smith - Arithmetic - 1873 - 366 pages
...wheat is 60*. a quarter the rent is £260, what will the rent be when wheat is 80*. a quarter ? 11. A and B can do a piece of work in 10 days ; B and C in 15 days and A and C in 25 days ; they all work at it for 4 days ; A then leaves, and B...
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Catalogue - Harvard University

Harvard University - 1873 - 732 pages
...build 51 rods ? 7. What is the difference between the square root and the cube root of 1771561 ? 8. A can do a piece of work in 10 days, A and C can do it in 7 days, A and B can do it in 6 days ; in how many days can B and C together do it ? ALGEBRA....
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The High School Arithmetic: Containig All the Matter Usually Presented in a ...

Philotus Dean - Arithmetic - 1874 - 472 pages
...settlement, July 1, 1871 ? Ans. $1410.71+. SC WEBER IN Асст. CUR. WITH HARRIS CRAWFORD. (,'r. 97. A and B can do a piece of work in 10 days, A and C in 12 days, and B and C in 15 days; in how many days can they all do it ? Ans. 8 days. 98. In what time can each...
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Harvard Examination Papers

1875 - 256 pages
...rods ? ^ 7. What is the difference between the square root and the cube root of 1771561 ? -\~ 8. A can do a piece of work in 10 days, A and C can. do it in 7 days, A and B can do it in 6 days; in how many days can B and C together do it ? XXVIII....
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The Practical Arithmetic on the Inductive Plan: Including Oral and Written ...

William James Milne - Arithmetic - 1877 - 402 pages
...the number in the third field. If the entire number was 434, how many were there in each field ? 69. A and B can do a piece of work in 10 days, B and C can do it in 12 days, and A and C in 15 days. How long will it take each to do it? 70. A, B...
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A New Complete Arithmetic: Uniting Oral and Written Exercises

Emerson Elbridge White - Arithmetic - 1883 - 368 pages
...piece of work in 4 days, B in 5 days, and C in 6 days : in what time can they together do it ? 65. A and B can do a piece of work in 10 days, and A, B, and C in 8 days: how long will it take C alone to do the work? 66. A, B, and C can do a job...
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