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 Βιβλία Βιβλία 151 - 160 από 173 για miles an hour and the other at the rate of 40 miles an hour ; how far apart will....
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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## Plane Trigonometry

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,...

## Ray's Modern Practical Arithmetic: A Revised Edition of Ray's Practical ...

Joseph Ray - 1903 - 320 σελίδες
...station at the same time and travel in the same direction, the first 38 miles an hour, and the second 30 miles an hour. How far apart will they be at the end of two days ? 384 mi. 4. A factory made 16150 boxes on Monday, 17050 on Tuesday, 17364 on Wednesday, 17500...

## Five-place Logarithmic and Trigonometric Tables

George Albert Wentworth, George Anthony Hill - 1903 - 75 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 6,...

## New Plane and Spherical Trigonometry, Surveying, and Navigation

George Albert Wentworth - 1903 - 390 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 ? a + Ь = 36. a - Ъ = 5. A + В = 150°. B)= 75°. log(ab)=...

## A Mental Arithmetic

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 — }...

## Arithmetic, Mensuration and Use of Letters in Formulas, Principles of ...

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....

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 —...

## The Teachers' Institute: A Monthly Magazine of Education, Τόμος 18

1895
...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...

## The Elementary School Teacher, Τόμος 5

1905
...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...

## Elementary Algebra

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....