 | William Frothingham Bradbury - Algebra - 1868 - 270 pages
...sum of all its parts. 8. Quantities respectively equal to the same quantity are equal to each other. SECTION II. ALGEBRAIC OPERATIONS. 14. A THEOREM is...father. Suppose we let x equal the age of the son; then 2x equals the age of the father ; and then, by the conditions of the problem, x, the son's age, plus... | |
 | William Frothingham Bradbury - Algebra - 1868 - 264 pages
...ALGEBRAIC OPERATIONS, 14, A THEOREM is something to be proved. 15. A PROBLEM is something to be done. 10. The Solution of a Problem in Algebra consists, —...is double that of the son ; what is the age of each 1 . It is evident that if we knew the age of the son, by doubling it we should know the age of the... | |
 | William Frothingham Bradbury - Algebra - 1872 - 268 pages
...ALGEBRAIC OPERATIONS. 14, A THEOREM is something to be proved. 1.1, A PROBLEM is something to be done. 18. The Solution of a Problem in Algebra consists, —...father. Suppose we let x equal the age of the son; then 2 a; equals the age of the father ; and then, by the conditions of the problem, a;, the son's age,... | |
 | William Frothingham Bradbury - 1875 - 280 pages
...sum of all its parts. 8. Quantities respectively equal to the same quantity are equal to each other. SECTION II. ALGEBRAIC OPERATIONS. 14. A THEOREM is...father. Suppose we let x equal the age of the son; then 2 ж equals the age of the father ; and then, by the conditions of the problem, ж, the son's age,... | |
 | Edward Albert Bowser - Algebra - 1888 - 868 pages
...30, or —20. Both these values are admissible, since a negative possession is a debt (Art. 20). 7. The sum of the ages of a father and his son is 80 years ; also one-fourth of the product of their ages, in years, exceeds the father's age by 240... | |
 | John Tilden Prince - 1894 - 120 pages
...How may 12 cents be divided between two boys so that their shares will be in the ratio of 1 to 2 ? 2. The sum of the ages of a father and his son is 40 years. The father is 3 times the age of the son. How old is each ? 3. Two men contracted to do a... | |
 | George Albert Wentworth - Algebra - 1894 - 238 pages
...age 10 years ago. 2 x — 40 = x — 10 2x-x = 40- 10. ... x = 30, A's age, and - = 15, B's age. 9. The sum of the ages of a father and his son is 80 years. The son's age increased by 5 years is one.fourth of the father's age. Find their ages. Let... | |
 | Charles Smith - Algebra - 1894 - 620 pages
...of the problem, if by a square root of a number is meant only the arithmetical square root. Ex. 6. The sum of the ages of a father and his son is 100 years ; also one-tenth of the product of their ages, in years, exceeds the father's age by 180.... | |
 | John Tilden Prince - Arithmetic - 1895 - 358 pages
...How may 12 cents be divided between two boys so that their shares will be in the ratio of 1 to 2 ? 2. The sum of the ages of a father and his son is 40 years. The father is 3 times the age of the son. How old is each ? 3. Two men contracted to do a... | |
 | G. A. Wentworth - 1898 - 422 pages
...one third as old as A. Ten years ago he was one fourth as old as A. What are their present ages ? 22. The sum of the ages of a father and his son is 75 years. The son's age increased by 5 years is one fourth of the father«s age. Find their ages. 23.... | |
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The Solution of a Problem in Algebra consists, — 1st. In reducing the statement to the form of an equation ; 2d. In reducing the equation so as to find the value of the unknown quantities. EXAMPLES FOR PRACTICE. 1. The sum of the ages of a father and... 
