The science of arithmetic, by J. Cornwell and J.G. Fitch

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Page 110 - 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.
Page 355 - A person invests £1365 in the 3 per cents, at 91 ; he sells out £1000 stock when they have risen to 93^, and the remainder when they have fallen to 85. How much does he gain or lose by the transaction ? 12.
Page 343 - A privateer running at the rate of 10 miles an hour discovers a ship 18 miles off making way at the rate of 8 miles an hour : how many miles can the ship run before being overtaken ? Ans.
Page 194 - In a series of equal ratios, any antecedent is to its consequent, as the sum of all the antecedents is to the sum of all the consequents. Let a: 6 = c: d = e :/. Then, by Art.
Page 97 - ... remainder, and so on, until there is no remainder. The last divisor will be the greatest common divisor.
Page 204 - Sir," said I, after puzzling a long time over "more requiring more and less requiring less" — "will you tell me why I sometimes multiply the second and third terms together and divide by the first — and at other times multiply the first and second and divide by the third?" "Why, because more requires more sometimes, and sometimes it requires less — to be sure. Haven't you read the rule, my boy?" " Yes, sir, I can repeat the rule, but I don't understand it.
Page 110 - To reduce an improper fraction to a whole or mixed number, — RULE : Divide the numerator by the denominator ; the quotient will be the whole or mixed number. EXAMPLES FOR PRACTICE.
Page 356 - I buy 10 shares of £20 each at 27£ ; I receive a dividend of 15 per cent. and then sell out at 37 £. How much have I gained in all ? 13.
Page 112 - If the numerator and denominator of a fraction be both multiplied or both divided by the same number, the value of the fraction is not altered.
Page 354 - After this one more man and one more boy are put on, and ^ more is done in 3 days ; how many more men must be put on, that the whole may be completed in one day more ? (522) £10,000 are left to a person, and allowed to accumulate for 3 years at 5 per cent.

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