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" B together can build a boat in 8 days, and with the assistance of C they can do it in 5 days ; how much of it can A and B... "
First Lessons in Arithmetic: On the Plan of Pestalozzi, with Some Improvements - Σελίδα 137
των Warren Colburn - 1825 - 172 σελίδες
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Daboll's Schoolmaster's Assistant: Improved and Enlarged, Being a Plain ...

Nathan Daboll - 1815 - 250 σελίδες
...and in the fifth 450 ; how many had he ? Jlns. 120,... 35. A and B together can build a boat in 13 days, and with the assistance of C they can do it in 1 1 days; in what time would C do it alone ? «lns. 23|. days. 36. There are three numbers, 23, 25,...

Daboll's Schoolmaster's Assistant: Improved and Enlarged. Being a Plain ...

Nathan Daboll - 1818 - 246 σελίδες
....f\, and in the fifth 450 ; how many had he ? Ms. 1200. 55. A and B together can build a boat in 18 days, and •with the assistance of C they can do it in 1 1 days ; in •what time would C do it alone ? Ms. 28f. days. 36. There are three numbers, 23, 25,...

Daboll's Schoolmaster's Assistant: Improved and Enlarged; Being a Plain ...

Nathan Daboll - 1820 - 254 σελίδες
...TV, and in the fifth 450 ; how many had he ? Arts. 1200. 35. A and B together can build a boat in 1 8 days, and with the assistance of C they can do it in 11 days ; in what time would C do it alone ? Jns. 28f. clays. 36. There are three numbers, 23, 25,...

Intellectual Arithmetic: Upon the Inductive Method of Instruction

Warren Colburn - 1849 - 174 σελίδες
...fill in 1 hour ? and how long would it take them all to fill it, if they were all running at once ? 152. A and B together can build a boat in 8 days,...they can do it in 5 days ; how much of it can A and £ build in 1 day ? how much of it can A, B, and C, build in 1 day ? how much of it can C build alone...

Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ...

Warren Colburn - 1826 - 176 σελίδες
...take them t it, if they were all running at once ? 152. A and B together can build a boat in 8 ... and with the assistance of C they can do it in 5 days ; how much of it can A and B build in 1 day I how much of it can A, B, and C, build in 1 day ? how much of it can C build alone in 1 day ? how...

Intellectual Arithmetic: Upon the Inductive Method of Instruction

Warren Colburn - 1829 - 170 σελίδες
...fill in 1 hour ? and how long would it take them all to fill it, if they were all running at once ? 152. A and B together can build a boat in 8 days, and with the assistance of.C they can do it in 5 days ; how much of it can A and B build in 1 day ? how much of it can A, B,...

Intellectual Arithmetic: Upon the Inductive Method of Instruction

Warren Colburn - 1828 - 186 σελίδες
...? and how long would it take them all to fill it, if they were all running at once ? 152. A and В together can build a boat in 8 days, and with the assistance of С they can do it in 5 days ; how much of it can A and В build in 1 day ? how much of it can A, B,...

Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method ...

Warren Colburn - 1829 - 180 σελίδες
...running at once ? 152. A and В together can build a boat in S days, and with the assistance of С they can do it in 5 days ; how much of it can A and В build in 1 day ? how much of it can A, B, and C, build in 1 day ? how much of it can С build alone...

A Short System of Practical Arithmetic: Compiled from the Best Authorities ...

William Kinne - 1829 - 246 σελίδες
...time, then, could Y get it done himself? Ans. 81f days. 48. A and B together can build a boat in 18 days, and with the assistance of C, they can do it in 11 days; in what time then, would G do it by himself ? Ans. 28f days. 49. Laid out in a lot of muslin...

Daboll's Schoolmaster's Assistant: Improved and Enl. ...

Nathan Daboll - 1829 - 252 σελίδες
...TV, and in the fifth 450 ; how many had he 1 Ans. 1200. 35. A and B together can build a boat in 18.. days, and with the assistance of C they can do it in 11 days ; in what time would C do it alone ? Ans. 28f days. 36. Theie are three numbers, 23, 25, and...




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