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" 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... "
A Mental Arithmetic, Upon the Inductive Plan - Page 114
by Benjamin Greenleaf - 1860 - 156 pages
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A New System of Arithmetic: In which is Explained and Applied to Practical ...

Calvin Tracy - Arithmetic - 1840 - 316 pages
...of sufficient capacity to contain 230 gallons, in one hour, and by a pipe 35 gallons be drawn off in the same time, how long will it take to fill the cistern 1 Ans. 15 hours, 20 minutes. 49. If 150 Ib. of soap cost $15.60, what would 15 Ib. cost ? Ans. $1.56....
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Arithmetic: As Taught in the Troy Episcopal Institute

W. F. Walker - Arithmetic - 1841 - 246 pages
...of sufficient capacity to contain 230 gallons, in one hour, and by a pipe 35 gallons be drawn off in the same time, how long will it take to fill the cistern ? Ans. 15hr. 20min. (59.) A vessel at sea discharges a cannon, the report of which reaches me in 1...
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Mental Arithmetic Upon the Inductive Plan: Designed for Primary and ...

Benjamin Greenleaf - Arithmetic - 1852 - 156 pages
...part did the second man spend in a week ? How long would the 4 dollars last the first man alone ? 18. A cistern has 4 pipes. The first will fill it in 2...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, and for...
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The course of arithmetic as taught in the Pestalozzian school, Worksop ...

J L. Ellenberger - 1854 - 336 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 a figure...
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Mental Arithmetic Upon the Inductive Plan: Designed for Primary and ...

Benjamin Greenleaf - Mental arithmetic - 1857 - 162 pages
...part did the second man spend in a week ? How long would the 4 dollars last the first man alone ? 18. A cistern has 4 pipes. The first will fill it in 2...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, and for...
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A Mental Arithmetic Upon the Inductive Plan: Being an Advanced Intellectual ...

Benjamin Greenleaf - Arithmetic - 1859 - 168 pages
...in 3 hours ; if both pipes are open, how long will it take to fill the cistern? 9. A cistern has i pipes ; the first will fill it in 2 hours, the second...long will it take to fill the cistern ? 10. A and В together can build a wall in 16 days, but with the aid of С they can build it in 10 days ; how...
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Mental Arithmetic Upon the Inductive Plan: Designed for Primary and ...

Benjamin Greenleaf - Arithmetic - 1851 - 150 pages
...would the 4 dollars last the first man alone ? 18. A cistern has 4 pipes. The first will fill it in '1 hours, the second will fill it in 3 hours, the third...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, and for...
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Common School Arithmetic on the Analytic System: With an Appendix of the ...

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. It teaches...
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Manual of Intellectual Arithmetic: An Independent Treatise Upon the Basis of ...

Benjamin Greenleaf - Arithmetic - 1877 - 170 pages
...to fill it ? 8. A cistern has 2 pipes ; the first will fill it in 2 hours, and the second will empty it in 3 hours ; if both pipes are open, how long will...cistern ? 10. A and B together can build a wall in 8 days, but with the aid of С they can build it in 5 days ; how long will it take С to build it alone...
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Manual of Intellectual Arithmetic: An Independent Treatise Upon the Basis of ...

Benjamin Greenleaf - Arithmetic - 1877 - 160 pages
...how long will it take to fill the cistern ? • 9. A cistern has 4 pipes ; the first will fill it iii 2 hours, the second will fill it in 3 hours, the third...cistern ? 10. A and B together can build a wall in 8 days, but with the aid of С they can build it in 5 days ; how long will it take С to build it alone...
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