 | John H. Harney - 1840 - 298 páginas
...- + = I <CX 1 + — =— 30 12 12 360 + 12 x = 30 x 360 = 18 x я; = 20 ~ + A = A = A 12. A and В can do a piece of work in 6 days. A can do it in 18 .days without the help of В. In what time can В alone do it ? 13. Three men, A, В and C,-can... | |
 | George Peacock - 1842 - 426 páginas
...and the denominator by y, the eqnatKes will be »+2 1 r-2 1 = ~=: and the fraction is — . 14 (3) A and B can do a piece of work in 6 days: A and C can do it in 9 days, and A, B, C can do 8 times the same work in 45 days : in what tin*s can... | |
 | Pliny Earle Chase - 1844 - 164 páginas
...1 day ? What part can they both build ? In what time will they build it, if they work together? 69. A. and B. can do a piece of work in 6 days, and B. alone can do it in 10 days. What part can they both do in 1 day ? What part can B. do in 1 day... | |
 | Barnard Smith - 1857 - 740 páginas
...express both a dollar and a franc in terms of the unit of money mentioned in the last question. 8. A and B can do a piece of work in 6 days, B and C in 7 days, and A, B, and C can do it hi 4 days ; how long would A and C take to do it ? 9.... | |
 | Silas Lawrence Loomis - 1859 - 324 páginas
...difference between the sou's and daughter's portion was $7000. What was the widow's portion ? 2243. If A. and B. can do a piece of work in 6 days, B. and C. in 8 days, and A. and C. in 10 days, in what time can each do it alone ? 2244. How many reams... | |
 | Daniel W. Fish - 1871 - 300 páginas
...between two numbers is 8, and T'T of the larger is equal to 4 of the smaller. What are the numbers ? 261. A and B can do a piece of work in 6| days; B and 0 in 12 days ; and A and C in 10 days. In how many — — days can all working together do it... | |
 | James Loudon - 1873 - 360 páginas
...second condition, From these two equations we find .«=3, y=6. Therefore the number sought is 86. 3. A and B can do a piece of work in 6 days ; A and C can do it in 9 days, and A, B, C can do 8 times the same work in 45 days. In what times can they... | |
 | James Loudon - 1873 - 314 páginas
...second condition, From these two equations we find j;=8, y=6. Therefore the number sought is 86. 8. A and B can do a piece of work in 6 days ; A and C can do it in 9 days, and A, B, C can do 8 times the same work in 45 days. In what times can they... | |
 | Barnard Smith - 1873 - 366 páginas
...express both a dollar and a franc in terms of the unit of money mentioned in the last question. 8. A and B can do a piece of work in 6 days, B and C in 7 days, and A, B, and C can do it in 4 days ; how long would A and C take to do it ? 9.... | |
 | 1875 - 648 páginas
...£1,953 -r 31 = 63 A. gets 3| x 4 X 63 = 945. B. ,, 3 x 4 X 63 = 756. C. „ 1 X 4 x 63 = 252. Ant. 10. A. and B. can do a piece of work in 6 days, B. and C. in 7 days, and A., B. and C. in 4 days. How long would A. and C. take to do it ? If A. and... | |
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A and B can do a piece of work in 6 days ; A... 
