 | John Bayley (fellow of Emmanuel College, Cambridge.) - Algebra - 1830 - 428 pages
...persons are now 30 and 20, ie as 3 : 2 ; in how many years will they be as 5 : 4 ? Answer, 20 years. 75. A cistern can be filled by 3 pipes ; by the first in 15 hour, by the second in 85 hours, by the third in 5 hours : in what time may it be filled by means... | |
 | John Bayley - 1830 - 230 pages
...persons are now 30 and 20, ie as 3 : 2 ; in how many years will they be as 5 : 4 ? Answer, 20 years. 75. A cistern can be filled by 3 pipes ; by the first in lj hour, by the second in 3| hours, by the third in 5 hours : in what time may it be filled by means... | |
 | George Roberts Perkins - Arithmetic - 1841 - 274 pages
...What had he at first ? Ans. 3s, 9d. 62. A cistern can be filled by three pipes; by the first in 1J hours, by the second in 3| hours, and by the third in 5 hours. In what time will this cistern be filled when all three pipes are open at once ? Ans. In 48... | |
 | Thomas Tate (mathematical master.) - 1844 - 184 pages
...of 54; therefore 56 : 2 x 1 of 56 or 36 :: 41. : 2 X | of 41. or f Z.; fZ. = 2fZ. = 2/. \3s.4d. xi. A cistern can be filled by 3 pipes: by the first in...second in 3 hours, and by the third in 4 hours ; in what time will the cistern be filled, when the 3 pipes are opened at once ?....Ans. -JL| hours. Proof.... | |
 | Joseph Ray - Algebra - 1848 - 260 pages
...as 1 to 2 ? A. 20 yrs. 59. A cistern has 3 pipes to fill it; by the first, it can be filled in 1 j hours, by the second, in 3] hours, and by the third, in 5 hours; in what time can it be filled, by all three running at once? GO. Find the time in which A,... | |
 | George Roberts Perkins - Arithmetic - 1849 - 344 pages
...shillings at a fourth tavern, he then had nothing remaining. What had he at first ? Ans. 3 s. 9 d. 52. A cistern can be filled by 3 pipes ; by the first in li hours, by the second in 3^ hours, and by the third in 5 hours. In what time will this cistern be... | |
 | George Roberts Perkins - Arithmetic - 1849 - 356 pages
...shillings at a fourth tavern, he then had nothing remaining. What had he at first ? Ans. 3s. 9d. 52. A cistern can be filled by 3 pipes ; by the first in 11 hours, by the second in 3J hours, and by the third in 5 hours. In what time will this cistern be... | |
 | George Roberts Perkins - Arithmetic - 1850 - 356 pages
...shillings at a fourth tavern, he then had nothing remaining. What had he at first ? Ans. 3s. 9 d. 52. A cistern can be filled by 3 pipes ; by the first in 1^ hours, by the second in 3i hours, and by the third in 5 hours. In what time will this cistern be... | |
 | George Roberts Perkins - Arithmetic - 1851 - 358 pages
...shillings at a fourth tavern, he then had nothing remaining. What had he at first 1 Ans. 3s. 9 d. 52. A cistern can be filled by 3 pipes ; by the first in li hours, by the second in 3^ hours, and by the third in 5 hours. In what time will this cistern be... | |
 | Thomas H. Palmer - Arithmetic - 1854 - 356 pages
...together equal that of their father ? Prove. 228. A cistern has three pipes. By the first it can be filled in 2 hours, by the second in 3 hours, and by the third in 4 hours. In what time can it be filled when all three run together? Ans. in 55 T 5 F minutes. 229. A cistern of... | |
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A cistern can be filled by 3 pipes; by the first in 2 hours, by the second in 3 hours, and by the third in 4 hours. In 
