 A cistern has 4 pipes. The first will fill it in 2 hours, the second will fill it in 3 hours, the third in 4 hours, and the fourth will empty it in 2 hours. Now, if the pipes are all open at the same time, how long will it take to fill the cistern ? 19.  Complete Arithmetic, Parts 2 and #3 - Page 159by George E. Mercer - 1909 - 294 pagesFull view - About this book
 | Benjamin Greenleaf - Mental arithmetic - 1854 - 156 pages
...hours, the third in 4 hours, and the fourth will empty it in 2 hours. Now, if the pipes are all open at the same time, how long will it take to fill the cistern ? 19. A boy had 20 cents to spend for apples and peaches ; for every apple he gave 2 cents,... | |
 | J L. Ellenberger - 1854 - 338 pages
...through a tap, that empties it in 1£ hours. Suppose the cistern empty, and the two pipes and the tap act at the same time, how long will it take to fill the cistern. PART iV. DECIMAL FRACTIONS. 164. In the common system of numeration, it has been shown that... | |
 | Benjamin Greenleaf - Mental arithmetic - 1857 - 162 pages
...hours, the third in 4 hours, and the fourth will empty it in 2 hours. Now, if the pipes are all open at the same time, how long will it take to fill the cistern ? 19. A boy had 20 cents to spend for apples and peaches ; for every apple he gave 2 cents,... | |
 | Benjamin Greenleaf - Arithmetic - 1858 - 186 pages
...hours, the third in 4 hours, and the fourth will empty it in 2 hours ; now, if the pipes are all open at the same time, how long will it take to fill the cistern ? 10. A and B together can build a wall in 16 days, but with the aid of C they can build it... | |
 | Silas Lawrence Loomis - Arithmetic - 1859 - 324 pages
...will empty it as follows : EFG in 7 hours, FGH in 6, G. HE in 5, and EFH in 4 hours. Suppose all the pipes are opened at the same time, how long will it take to discharge the full vessel ? Ans. 10 hours. 1892. At what time will the hour and minute hands be together... | |
 | Benjamin Greenleaf - Arithmetic - 1851 - 150 pages
...hours, the third in 4 hours, and the fourth will empty it in 2 hours. Now, if the pipes are all open at the same time, how long will it take to fill the cistern ? 19. A boy had 20 cents to spend for apples and peaches ; for every apple he gave 2 cents,... | |
 | Shelton Palmer Sanford - Arithmetic - 1872 - 404 pages
...cistern by a third pipe, which empties it in 1£ hours. If the cistern is empty, and the three pipes act at the same time, how long will it take to fill the cistern ? Ans. 6 hours. MENSURATION. ARTICLE 358. MENSURATION literally means the art of meo» wing.... | |
 | Benjamin Greenleaf - Arithmetic - 1877 - 160 pages
...hours, the third in. 4 hours, and the fourth will empty it in 2 hours; now, if the pipes are all open at the same time, how long will it take to fill the cistern ? 10. A and B together can build a wall in 8 days, but with the aid of С they can build it... | |
 | Benjamin Greenleaf - Arithmetic - 1879 - 190 pages
...hours, the third in 4 hours, and the fourth will empty it in 2 hours ; now, if the pipes are all open at the same time, how long will it take to fill the cistern ? 10. A and B together can build a wall in 16 days, but with the aid of C they can build it... | |
 | Simon Newcomb - Algebra - 1884 - 572 pages
...hours, No. 2 in 8 hours, and No. 3 in 12. No. 4 can empty it in 9 hours, and No. 5 in 18. If they begin at the same time, how long will it take to fill the tank? starts at the rate of 19 miles in 4 hours. How far will they travel before B overtakes A? 93.... | |
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