A Key to the Western Calculator, Containing the Solution of All the Examples And Questions for Exercise ... to Which is Added, Some Useful Rules, Designed Chiefly to Facilitate the Labour of Teachers; And Assist Such As Have Not the Opportunity of a Tutor

Cover A Key to the Western Calculator, Containing the Solution of All the Examples And Questions for Exercise ... to Which is Added, Some Useful Rules, Designed Chiefly to Facilitate the Labour of Teachers; And Assist Such As Have Not the Opportunity of a Tutor
A Key to the Western Calculator, Containing the Solution of All the Examples And Questions for Exercise ... to Which is Added, Some Useful Rules, Designed Chiefly to Facilitate the Labour of Teachers; And Assist Such As Have Not the Opportunity of a Tutor
Armstrong John
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Quest. 8. 12ft.=144 inches, and 144in.xlll in* =sl5984 inches. In wheel will have made 111 revolutioi turns. But 144—11 1 =33 turns of greater in that distance. Now, as 35 distance :: 1000 turns : 484363 T 7 T duced to miles, is 7 miles, 5 furloi 7-A inches.
d by Google SINGLE RULE OF THREE, 45 t Page 63.
Quest 9. This question being inverse, say * *t ft i^ 15x18 15x3 a _. , As 15 : 18 :: 12 : — _-■»__ =22 J da J 8 ' yds. dolls, cf 8. yds.
10. As 42,5 : 191,25 v 1 : 4,5 ::'l5 : 67 dolte. 50 cts
.... what 15 yards cost; but -f of 67 dolls. 50 cts.=45 dells, the amount tb&t 15 yards sells for. t Now, 4&k yards at 1 dollar, comes to 42 dollars 50 centi, whole gain.
d. cts. d. cts. d. cts.
191 25+42,50=233,75 roust get in all Subtract 45,00 received for 15 yards.
Diff. 8188,75 the sum that the remaining 27i yards must bring. But yds. d. c. yd. d. $.
As 27,5 : 188,75 :: 1 : 6,86^- 11. State by the general rule yds. yds. ft. ft.
As 60 : 10 (=30) v 6 : 1 :: 18 : 8 feet ?
rod. rod. rod. A.


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