Hopkins And Underwood's Arithmetic Bk. 2

Cover Hopkins And Underwood's Arithmetic Bk. 2
Hopkins And Underwood's Arithmetic Bk. 2
Hopkins William John
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to mow one part, or ^ of the field, it would take him 7x7 hrs., or 49 hrs., ^ to mow the seven parts, or ^ of the field, which is the whole field.
Similarly, if it takes B 21 hrs. to mow 4 parts, or ^ of the field, it will take him ^ hrs. to mow ^ of the field, y 172 ARITHMETIC and 7x^^ hrs., or 36 J hrs., to mow |, or the whole field.
Therefore, A's time s 49 hrs.
B's time « 86| hrs.
EX£RCI8E 98 1. If a person can do a piece of work in 7 da., what part of the work can he do in one day ? If he
...can do the work in 4 J da., what part of the work can he do in one day?
2. If B can copy a manuscript in 5| hr., how much can he copy in 1 hr.?
3. John travels ^y of the distance between two cities in 1 hr. How many hours will it take him to travel the remainder of the distance ?
4. A can do a piece of work in 3 hr., B in 5 hr., and C in 6 hr. How long will it take the three working together to do the work ?
5. A can do a piece of work in 4 hr., B in 5 hr., and A, B, and C together in IJ hr. How long would it take C alone to do the work ?


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