A new and plain system of arithmetic; containing the several rules of that useful science, concisely defined and greatly simplified, the whole, ... and to the trade and commerce of the United - Softcover
Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1810 Excerpt: ...5/. &d. per bufhsl, will pay for. it--as alsso the coft per piece? A i 17%7ii bushels. Annver i / ' _,,. j 8. Suppose my falary to be 73 pounds a year, what is ic per day? Answer--4 (hillings. '9. If the freight of a fhip coft £.529.11/. what fliould be paid to Af. B. for his-s parts? Anjwer--.%% 14/. lod. 10 If the earth performs its diurnal revolution in a folar day or 24 hours, in what time does it move one degree,? Anfwer--4 minutes. It. If a fhip is valued at..537, what are J of her worth? Anjwcr--£ 201 Js. 6d. 12. The earth being 360 degrees in circumference, turnsround on its axis once in 24 hours; how far are the inhabitants at the equator cariied in one minute, a degree there being 69 miles? Answer--17 miles,. 3 furv 13. Aftronomers compute the eaath's orbitj or track which it describes rour.d the fun in 365 days 6 hours--to be about 59 900000 miles; how far then, per minute, muft we be carried through the firmament by this wonderful motion? Answer--1134 4-miles. 14. Sir Ifaac Newton and others, have found by nice experi ment, that found flies (if not interrupted) at the rate of 1143/ feet per lecond, and a perfon in health has about 75 pult'ations in a minute; now the breadth of a river is required, at one fide of which A. firing a gun, B. dire5Hy oppoiite at the other, counts six pulfarions at his wrift between feeing the flafh and hearing the report? Ans. 1 mile, 67 yards; 15. If the report of a piece of ordnance be heard one minute 3 feconds afier the flafh was obferved; the diftance is required. Answer--13 miles, 5 fur. 16. Suppofe a ciftern to contain I996 gallons of water, and by one pipe there runs into it 260 gallons in an hour, and by another pipe there runs out 253!-gallons in an hour; required the time in filling the faid ...
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