Αναζήτηση Εικόνες Χάρτες Play YouTube Ειδήσεις Gmail Drive Περισσότερα »
Είσοδος
 Βιβλία Βιβλία
If A can do £ of a piece of work in 1 day, and B can do ^ of it in 1 day, how much would both do in a day ? How long would it take them both together to do the whole ? 147.
Intellectual Arithmetic - Σελίδα 132
των Warren Colburn - 1839
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο

Standard Arithmetic: Embracing a Complete Course for Schools and Academies

William James Milne - 1892 - 428 σελίδες
...do the whole work in 4 times 3| days, or 14 days, and ^ of it in 1 day. Since A and B can do \ of it in 1 day, and B can do ^ of it in 1 day, ^ - iJj, or T'j, is the part that A can do in 1 day. Since A can do -ft of the work in 1 day, he can...

Arithmetic by Grades for Inductive Teaching, Drilling and Testing, Τόμος 5

John Tilden Prince - 1894
...person walks a mile in \$ of an hour, how many miles can he walk in 12 hours ? 3. If a man can do f of a piece of work in 4 days, how much of it can he do in 1 day ? 4. Hew many yards are there in 50 feet ? 5. If £ of a bushel of potatoes costs 16X, what will 1...

The First Steps in Algebra

George Albert Wentworth - 1894 - 210 σελίδες
...bill in payment. How much money should be returned to her ? \$100-\$(a+Ы.2с). 7. If a man can perform a piece of work in 4 days, how much of it can he do in one day ? ¿. 8. If a man can perform a piece of work in x days, how much of it can he do in one day...

Grammar School Arithmetic for Inductive Teaching, Drilling and Testing ...

John Tilden Prince - 1895 - 282 σελίδες
...person walks a mile in § of an hour, how many miles can he walk in 12 hours ? 3. If a man can do f of a piece of work in 4 days, how much of it can he do in 1 day ? 4. How many yards are there in 50 feet ? 5. If £ of a bushel of potatoes costs 16/, what will 1...

Lippincott's Elementary Arithmetic: Embracing the Science and Practical ...

James Morgan Rawlins - 1899 - 281 σελίδες
...acres in the whole farm ? 17. A wind blowing 28^ miles an hour blows how far in 10^ hours ? 18. If A. can do a piece of work in 4 days, how much of it can he do in 1 day ? If B. can do a piece of work in 5 days, how much can he do in 1 day ? How much can A. and B. do together...

William W. Speer - 1899 - 261 σελίδες
...Elementary Arithmetic." 1. If a; equals the amount of work 4 men can do in a day, 5 x equals what ? 2. A can do ^ of a piece of work in 1 day and B -J of it. What part of the work can both do in a day ? 3. A can mow x acres in £ of a day, and B can...

William W. Speer - 1899 - 261 σελίδες
...Elementary Arithmetic." 1. If x equals the amount of work 4 men can do in a day, 5 x equals what ? 2. A can do £ of a piece of work in 1 day and B -J of it. What part of the work can both do in a day ? 4. John, can do a piece of work in a day, and...

A Key to the Standard Arithmetic and the Mental Arithmetic

William James Milne - 1901 - 272 σελίδες
...do J of it in 1 day ; and since B can do it in 6 days, he can do J of it in 1 day. Since A can do J of a piece of work in 1 day, and B can do J of it in 1 day, they can together do J + J, or JJ of it in 1 day. Since they together can do JJ of...

Ray's Modern Intellectual Arithmetic: A Revised Edition of Ray's ...

Joseph Ray - 1905 - 144 σελίδες
...can walk from Cincinnati to Dayton in 3^ days. What part of the distance can he walk in 2 days ? 8. A can do £ of a piece of work in 1 day, and B ^ of it. What part of the work can both do in a day ? 9. A can do |, B ^, and С -| of a piece of work...

First Course in Algebra

William Benjamin Fite - 1913 - 285 σελίδες
...two to do it. Then - = the x part of the whole the two can do in 1 day. Now A can do £ of the whole in 1 day and B can do \ of it in 1 day. They therefore can do together £ + J of it in 1 day. Hence - =- + -. x 58 12. A and B together finish...