# The Tutor's Assistant Modernised: Or, A Regular System of Practical Arithmetic: Comprising All the Modern Improvements in that Art, that are Necessary for the Man of Business and the Practical Scholar

Hall and Elliot, 1791 - 283 sider

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### Innhold

 II 36 March 21 1791 72 º The Double Rule of Three 79 his younger pupils get the above table by heart 80 + Tare and Trett 102 CONTENTS 105 Intereſt I 2 I 115
 A s E 1 130 Commiſfion I 34 134 Extraćtion of the Square Root 137 Compound Intereſt 140 IoI4 190 Write the multiplier under the multiplicand placing 233

### Populære avsnitt

Side 214 - To reduce fractions to a common denominator RULE. Multiply each numerator into all the denominators, except its own, for a new numerator, and all the denominators together for a common denominator. ' EXAMPLES. 1. Reduce 7 and -= to a common denominator.
Side 213 - Multiply all the numerators together for a new numerator, and all the denominators together for a new denominator.
Side 252 - RULE. 1 . Separate the given number into periods of three figures each, by putting a point over the unit figure and every third figure bejond the place of units.
Side 279 - To be 100 feet from th' top to th' ground ; Against the wall a ladder stood upright, Of the same length the castle was in height : •A. waggish youngster did the ladder slide (The bottom of it) 10 feet from the side ; ' Now I would know how far the top did fall, By pulling out the ladder from the wall t A 6 ini nearly 26.
Side 262 - Given the first term, last term, and common difference, to find the number of terms. RULE. — Divide the difference of the extremes by the common difference, and the quotient increased by 1 is the number of terms.
Side 273 - Old John, who had in credit liv'd, Though now reduc'd, a sum receiv'd. This lucky hit's no sooner found, Than clam'rous duns came swarming round. To th' landlord — baker — many more, John paid, in all, pounds.
Side 30 - Thirty Days hath September, April, June and November ; February hath Twenty-eight alone, And all the rest have Thirty-one ; Except in Leap Year, — then's the time February's Days are Twenty-nine.
Side 172 - Take the difference between each price, and the mean rale as before; then say, as the difference of that simple, whose quantity is given, is to the rest of the differences severally; so is the quantity given, to the several quantities required. ExAMPLES.
Side 199 - IK compound arbitration the rate or price of exchange between three, four, or more places, is given, in order to find how much a remittance paffing through them all will amount to at the laft place ; or to find the arbitrated price, or par of arbitration, between the iirlt place and the laft.
Side 274 - I. To find the number of permutations or changes, that can be made of any given number of things, all different from each other. RULE.