## Daboll's Schoolmaster's Assistant: Improved and Enlarged : Being a Plain and Practical System of Arithmetick Adapted to the United States |

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Page 157

A TABLE OF

- ,04 6 ,06 4+ ,045 6) so 5 _05 7 07_

year; or in federal money, of $1 for one year, at the rate percent, agreed --- -

RULE.

A TABLE OF

**RATIOS**. Rao percent.T Rario. TTRare per cent.**Ratio**. o ,03 5, 0.554- ,04 6 ,06 4+ ,045 6) so 5 _05 7 07_

**Ratio**is the simple interest of 11. for oneyear; or in federal money, of $1 for one year, at the rate percent, agreed --- -

RULE.

Page 158

211,45 principal. ,05

,8625 Ans.—352, 86 cts. 24 m. 2. What is the interest of 645. 10s. for 3 years, at 5

per cent. per annum ? £645,5x06x3=116,190=E116 3s. 9d. 2,4 qrs. Ans. 3.

211,45 principal. ,05

**ratio**. 10,5725 interest for one year. 5 multiply by the time. 52,8625 Ans.—352, 86 cts. 24 m. 2. What is the interest of 645. 10s. for 3 years, at 5

per cent. per annum ? £645,5x06x3=116,190=E116 3s. 9d. 2,4 qrs. Ans. 3.

Page 159

Ans. 54 per cent. case iv. The amount, principa, and rate per cent, given, to find

the time. Rule.—Subtract the principal from the amount; divide the remainder by

the product of the

Ans. 54 per cent. case iv. The amount, principa, and rate per cent, given, to find

the time. Rule.—Subtract the principal from the amount; divide the remainder by

the product of the

**ratio**and principal; and the quotient will be the time. ------------ 1. Page 161

Balance, 600 6S 40800 February 17, Received in part, 200 Balance, 400 June 1,

Rec'd in full of principal, 400 101 11600 - 388000 Then 388600 - ,06

cos. m. 365)23316,0003,879 Ans. - 63 87 94. The following Rule for computing ...

Balance, 600 6S 40800 February 17, Received in part, 200 Balance, 400 June 1,

Rec'd in full of principal, 400 101 11600 - 388000 Then 388600 - ,06

**Ratio**. - 3cos. m. 365)23316,0003,879 Ans. - 63 87 94. The following Rule for computing ...

Page 185

PROLLEM I. The first term, the last term (or the extremes) and the

find the sum of the series RULE. Multiply the last term by the

product subtract the first term; then divide the remainder by the

and ...

PROLLEM I. The first term, the last term (or the extremes) and the

**ratio**given, tofind the sum of the series RULE. Multiply the last term by the

**ratio**, and from theproduct subtract the first term; then divide the remainder by the

**ratio**, less by 1,and ...

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acres added allowing amount annuity annum answer Billings Bought breadth Bring bushels called cents ciphers cloth common compound interest contain continue cºs cost cube currency decimal demand denominator difference Divide dividend divisor dollars dols Entered equal ExAMPLEs farthings federal money feet figures fraction gain gallon give given given sum gross half hundred inches interest length less measure method miles millions mills mixed months Multiply nine paid payment pence percent period piece pound present worth principal proportion quantity question quotient ratio received Reduce remainder right hand rods root RULE sell share shillings simple sold solid square subtract sugar Suppose TABLE tare term third Thomas thousand units weight whole whole numbers wine yards