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BOSTON:
OHASE AND NICHOLS,

43 WASHINGTON STREET.

1863.

HARVARD
UNIVERSITY
LIBRARY

Entered according to act of Congress, in the year 1842,

BY THOMAS SHERWIN, in the Clerk's Office of the District Court of Massachusetts.

K E Y.

[In the first edition of the Algebra, the Articles are numbered erroneously from the commencement of Section XXVI. To make that edition correspond with the Key, increase by 2 the number of each Article, commencing with the Section specified.]

SECTION I.

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ART. 4.

1. Performed. 2. Horse $100. Saddle $10. 3. 6 bushels of each. 4. 11 of each. 5. 5 melons; 10 pears; 30 peaches. 6. 15 days. Man $20; boy $10. 7. 105, 210, and 315. 8. 25, 35, and 40. 9. 10 hours. One goes 80 miles, the other 70 miles. 10. 1st 8, 2d 16, 3d 24 guineas. 11. Wife $36000; elder son $27000; younger son $18000. 12..120 cavalry; 360 artillerymen; 720 infantry. 13. A 8 days, 72 rods; B 16 days, 112 rods; C 80 days, 400 rods. 14. 8 yds, 16 yds, and 24 yds respectively. 15. Sheep $2; calf $4; cow $20. 16. Greater 14 galls; less 7 galls. 17. Beef 10 lbs; mutton 20 lbs. 18. 32 of each. 19. 80 guineas; 240 crowns. 20. 10, 20, 30, 60 and 30 miles, on the respective days.

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