A Key to the American Tutor's Assistant Revised: In which All the Examples Necessary for a Learner are Wrought at Large; and Also Solutions Given of All the Questions for Exercise in the Various Rules. Designed Principally to Facilitate the Labour of Teachers, and Assist Such as Have Not the Opportunity of a Tutor's AidJoseph Crukshank, 1809 - 183 страници |
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Страница 64
... or , 28yds . 2qr . answer . ( 2 ) Thus : As glbs . 9 oz . 12dwt .: 411 / 12s . :: 1gr . Or as 56448grs .: 98784d . :: 1gr . 1d . For 98784- ÷ 564481d . answer . : ( 3 ) Thus inversely : As 250l . 7mo 64 The Single Rule of Three .
... or , 28yds . 2qr . answer . ( 2 ) Thus : As glbs . 9 oz . 12dwt .: 411 / 12s . :: 1gr . Or as 56448grs .: 98784d . :: 1gr . 1d . For 98784- ÷ 564481d . answer . : ( 3 ) Thus inversely : As 250l . 7mo 64 The Single Rule of Three .
Страница 65
... inversely : As 250l . 7mo .: 300l .: 58mo , For 250x7 = 1750 which ÷ 300 = 5mo . or 5mo . 25d . answer . ( 4 ) Thus : As Iday : 195 7d235d . :: 365days : 85775d . For 365 X235 = 85775d , which - 12 and by 20-3571 . 7s 11d . Then 500 ...
... inversely : As 250l . 7mo .: 300l .: 58mo , For 250x7 = 1750 which ÷ 300 = 5mo . or 5mo . 25d . answer . ( 4 ) Thus : As Iday : 195 7d235d . :: 365days : 85775d . For 365 X235 = 85775d , which - 12 and by 20-3571 . 7s 11d . Then 500 ...
Страница 66
... inversely : As 12in .: 20ft . :: 7in . Or , as 24 half in . zoft . :: 15half in .: 32ft . For 24 X 20 = 480 which ÷ 15 = 32ft . answer . ( 20 ) First , 20x5 = 100miles A travels before B sets out ; and 25-205 miles B gains upon A in one ...
... inversely : As 12in .: 20ft . :: 7in . Or , as 24 half in . zoft . :: 15half in .: 32ft . For 24 X 20 = 480 which ÷ 15 = 32ft . answer . ( 20 ) First , 20x5 = 100miles A travels before B sets out ; and 25-205 miles B gains upon A in one ...
Страница 70
... Inversely . 3 8 . 4. ) 120 2,0 ) 24,0 30 days . ans . 12 days . 8 ) s . men . 8 ) s . days . men . days . ( 3 ) Ist . As 24 : 4 96 2ndly , As 3 : 16 :: 16 3 12 4 3 16 ) 48 ( 3 men ans . 48 . 3 ) 48 men . 16 ( 4 ) Thus : 1st . As 3 ) 15 ...
... Inversely . 3 8 . 4. ) 120 2,0 ) 24,0 30 days . ans . 12 days . 8 ) s . men . 8 ) s . days . men . days . ( 3 ) Ist . As 24 : 4 96 2ndly , As 3 : 16 :: 16 3 12 4 3 16 ) 48 ( 3 men ans . 48 . 3 ) 48 men . 16 ( 4 ) Thus : 1st . As 3 ) 15 ...
Страница 71
... Inversely , as 2,00lb . : 6060m . :: 202,00lb . : 60m . For 6060 X 2 = 12120 which ÷÷ 20260 miles . answer . ( 6 ) Thus : 1st , As 32X40 = 1280 : 8days :: 28 × 40 = 1120 : 7days . 2nd , Inversely , as 145men : 7days :: 68men . ( 7 ) 7 ...
... Inversely , as 2,00lb . : 6060m . :: 202,00lb . : 60m . For 6060 X 2 = 12120 which ÷÷ 20260 miles . answer . ( 6 ) Thus : 1st , As 32X40 = 1280 : 8days :: 28 × 40 = 1120 : 7days . 2nd , Inversely , as 145men : 7days :: 68men . ( 7 ) 7 ...
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12 answer 12 days 12 Facit 2qrs 3qrs 4qrs 54 Facit 5qrs 5yds 60 answer 6days 9 Facit A's age A's stock acres American Tutor's Assistant amount Application Bought Bu.P.qt Bushels C.qr C.wt cent comp complete divisor D.cts DECIMALS deduct Defec Delphini ditto divi divisor & squ dols Dols.cts DRY MEASURE Facit 12 Facit 60 feet gals glish guin half pen hhds Ic.wt inches Interest inversely L. S. d Lastly LONG MEASURE miles Moidores Ovid oz.dwt oz.dwt.gr pence pezo pieces pints Prime cost Principal Proof qr.lb ratio remains root RULE OF THREE Sold SUBTRACTION Take tare TROY WEIGHT Tutor's Guide value of B's VULGAR FRACTIONS whole gain yards ΙΟ ΤΣ