 | John Hind - 1840 - 252 σελίδες
...what time can they do three times as much, all working together? Answer: Ihour. 47niin. 23t,see. (23) 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? Answer: All... | |
 | Roswell Chamberlain Smith - 1841 - 324 σελίδες
...which fire 5 rounds in 6 minutes, will kill 500 men in 1 hour at the same rate 1 A. 20 cannon. 100. 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 time can they do it jointly and separately ? A. Together,... | |
 | Roswell Chamberlain Smith - 1842 - 320 σελίδες
...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 12 days, and B and C in 14 days ; in what time can they do it jointly and separately? A. Together,... | |
 | Roswell Chamberlain Smith - 1843 - 320 σελίδες
...trench 50 yards long, 6 feet deep, and 1^ yards broad, in 9 days of 15 hours each ? A. 60 men. 100. 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 time can they do it jointly and separately? A. Together,... | |
 | Roswell Chamberlain Smith - 1850 - 314 σελίδες
...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 12 days, and B and C in 14 days ; in what time can they do it jointly and separately ? A. Together,... | |
 | Thomas H. Palmer - 1854 - 368 σελίδες
...third can empty it in 6 hours ? In what time would it be filled if all three were set running ? 44. A and B can do a piece of work in 10 days, and with the assistance of C they can do it in 8 days. How long would it take C alone to do it ? £g... | |
 | Thomas H. Palmer - 1854 - 356 σελίδες
...third can empty it in 6 hours ? la what time would it be filled if all three were set running ? 44. A and B can do a piece of work in 10 days, and with the assistance of 0 they can do it ia 8 days. How long would it take G alone to do it? £g... | |
 | James Watson - 1855 - 152 σελίδες
...time in which A, B, and C would do the work, working first all together, and secondly separately. 7. A and B can do a piece of work in 10 days, A and C in 12 days, B and C in 15 days ; in what time can they do it jointly and separately 1 8. A can do a... | |
 | Roswell Chamberlain Smith - 1856 - 334 σελίδες
...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,... | |
 | John Hind - 1856 - 346 σελίδες
...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... | |
| |
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. 
