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" miles an hour and the other at the rate of 40 miles an hour ; how far apart will they be at the end of 2 hours "
AN INTELLECTUAL ARITHMETIC, WITH AN INTRODUCTION TO WRITTEN ARITHMETIC. - Σελίδα 131
των A. WALTON, ELECTRA N. L. WALTON - 1869
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George Albert Wentworth - 1903 - 162 σελίδες
...and move along straight tracks that form an angle of 30°, one train at the rate of 30 miles an hour, the other at the rate of 40 miles an hour. How far apart are the trains at the end of half an hour ? 19. In a parallelogram given the two diagonals 5 and (i,...

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...and move along straight tracks that form an angle of 30°, one train at the rate of 30 miles an hour, the other at the rate of 40 miles an hour. How far apart are the trains at the end of half an hour ? a + Ь = 36. a - Ъ = 5. A + В = 150°. B)= 75°. log(ab)=...

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George Albert Wentworth - 1903 - 190 σελίδες
...and B start from the same spot and walk in opposite directions. If A walks 3f miles an hour and B 2f miles an hour, how far apart will they be at the end of an hour ? Lesson 44. Ex. 1. What is the difference between 2f and 1^ ? Solution : t — i = f — }...

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International Correspondence Schools - 1904 - 613 σελίδες
...are sailing towards each other, one at the rate of 18 miles an hour and the other at the rate of 15 miles an hour. How far apart will they be at the end of 205 hours ? DIVISION. roo CD (0 (d) (e) (/) (g) (*i (/) (/) (*) (/) (»») W (ö) 99,892. 167,220....

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George Albert Wentworth - 1904 - 45 σελίδες
...and B start from the same spot and walk in opposite directions. If A walks 3$ miles an hour and B 2f miles an hour, how far apart will they be at the end of an hour ? Lesson 44. Ex. 1. What is the difference between 2f and 1£ ? Solution : i — i = f —...

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...same depot at the same time and run in opposite directions, one at the rate of 30 miles and the other 40 miles an hour, how far apart will they be at the end of 9 hours? 2. If the above trains run in the same direction, how far apart will they be at the end of...

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...boats start at the same place; one sails up the river, another down the river; the current is so many miles an hour; how far apart will they be at the end of so many hours?" What is the function of such a problem? It is to train the mind to picture conditions...

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George Albert Wentworth - 1906 - 905 σελίδες
...the same time from two cities 450 miles apart and travel towards each other, one at the rate of 50 miles an hour and the other at the rate of 40 miles an hour. In how many hours will the trains meet ? Let x = the number of hours in which the trains will meet....




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