The Irish School Arithmetic for Intermediate Schools

Εξώφυλλο
Blackie & Son, Limited, 1895

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Σελίδα 29 - Operations with Fractions A) To change a mixed number to an improper fraction, simply multiply the whole number by the denominator of the fraction and add the numerator.
Σελίδα 84 - A and B can do a piece of work in 5 days ; A can do it in 7 days ; in how many days can B do it ? Ans.
Σελίδα 5 - The first and fourth terms of a proportion are called the extremes, and the second and third terms, the means. Thus, in the foregoing proportion, 8 and 3 are the extremes and 4 and 6 are the means.
Σελίδα 62 - Quantities are said to be in Arithmetical Progression when they increase or decrease by a common difference. Thus each of the following series forms an Arithmetical Progression : 3, 7, 11, 15, ... 8, 2, -4, -10,...
Σελίδα 13 - A bill of exchange is a written order from one person to another, directing...
Σελίδα 1 - If the wages of 54 men for 36 days amount to £60 15s. What will be the wages of SO men and 50 boys for 32 days, supposing 2 men to do as much- work as 5 boys?
Σελίδα 74 - If by selling goods at 50s. per cwt. I gain 20 per cent. what do I gain or lose per cent. by selling at 45s. per cwt.?
Σελίδα 32 - Distribute $200 among A, B, C, and D, so that B may receive as much as A; C as much as A and B together, and D as much as A, B, and C, together.
Σελίδα 23 - A can do a piece of work in 5 days, B in 6 days, and C in 7£ days ; in what time will they do it, all working together?
Σελίδα 17 - If there is a remainder after dividing the last figure, place the divisor under it, and annex it to the quotient. PROOF. — Multiply the quotient by the divisor, and add the remainder, if any, to the product : if the work is correct, the sum will be equal to the dividend.

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