The School-master's Guide: Or, A Complete System of Practical Arithmetic, Adapted to the Use of Schools. To which is Added, a Promiscuous Collection of Questions, and a Course of Retail Book-keeping

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J. White and T. Saint, 1766 - 191 σελίδες
 

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Σελίδα 150 - A hare starts 40 yards before a grey-hound, and is not perceived by him till she has been up 40 seconds : she scuds away at the rate of...
Σελίδα 111 - Multiply the divisor, thus augmented, by the last figure of the root, and subtract the product from the dividend, and to the remainder bring down the next period for a new dividend.
Σελίδα 39 - If a footman travel 130 miles in 3 days, when the days are 12 hours long ; in how many days, of 10 hours each, may he travel 360 miles ? Ans. 9|f days. 5. If 120 bushels of corn can serve 14 horses 56 days, how many days will 94 bushels serve 6 horses?
Σελίδα 142 - If the errors are unlike, divide the sum of the products by the sum of the errors, and the quotient will be the answer.
Σελίδα 44 - To reduce a mixed number to an improper fraction, — RULE : Multiply the whole number by the denominator of the fraction, to the product add the numerator, and write the result over the denominator.
Σελίδα 32 - ... number, if any, which was in this denomination before, then divide the sum as usual, and so on, till the whole is finished. The method of proof is the same as in Simple Division.
Σελίδα 43 - RULE. Divide the numerator by the denominator, and the quotient will be the whole or mixed number sought.
Σελίδα 146 - If a quantity of provisions serves 1500 men 12 weeks, at the rate of 20 ounces a day for each man, how many men will the same provisions maintain for 20 weeks, at the rate of 8 ounces a day for each man ? 55.
Σελίδα 57 - ... 1 from 5 to 15 ; 2 from 15 to 25 ; 3 from 25 to 35, &c.
Σελίδα 106 - RULE. Find, as in Alligation Medial, what will be the rate of a mixture made of the given quantities of the limited ingredients only; then consider this as the rate of a limited ingredient, whose quantity is the sum of the...

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