 | Bewick Bridge - Algebra - 1818 - 254 pages
...oГТ~27' Divide by xe, then 27=4x, and j.— — =6£, the number required. QUESTION lu. There Js a certain number, consisting of two digits. The sum...inverted. What is the number ? Let x= left-hand digit. y=right-hand digit. Then by Art. 63. 10x + i/=the number itself, and 10y + z=the number with digits... | |
 | Adrien Marie Legendre - Geometry - 1819 - 574 pages
...body weighs as much as his head and tail : what is the whole weight of the fish 2 .'lus. 721 bs. 60. There is a certain number, consisting of two digits, the sum of which digits is 5 ; and if 9 be added to the number itself the digits will be inverted : what is the... | |
 | Leonhard Euler - Algebra - 1821 - 380 pages
...same quantity. Ans. 6|. 136. There is a certain number, consisting of two digits. The sum of these digits is 5, and if 9 be added to the number itself the digits will be inverted. What is the number ? Ms. 23. 137. What number is that, to whirh if I add 20 and from f of this gum I subtract 12, the... | |
 | James Ryan, Robert Adrain - Algebra - 1824 - 542 pages
...equation (B), a: = 2j/ + 4=2Xl4+4, by substitution, .-. a; = 32, the shillings in his pocket. Trob. 6. There is a certain number, consisting of two digits....itself, the digits will be inverted. What is the number ? * Here it may be observed, that every number consisting of two digits is equal to 10 times the digit... | |
 | James Ryan - Algebra - 1824 - 550 pages
...From equation (B), £=2y+4=2Xl4+4, by substitution, .'. a: = 32, the shillings in his pocket. Prob. 6. There is a certain number, consisting of two digits. The sum of Ihose digits is 5 ; and if 9 be added to the number itself, the digits will be inverted. What is the... | |
 | Silvestre François Lacroix - Algebra - 1825 - 324 pages
...of the fish ? Ans. 72 Ibs. 60. There is a certain number, consisting of two digits, the sum of which digits is 5 ; and if 9 be added to the number itself the digits will be inverted : what is the number ? Ans. 23. 61. A person found, upon beginning the study of his profession, that | of his life hitherto... | |
 | Silvestre François Lacroix - Arithmetic - 1825 - 394 pages
...three equal parts the continued product of the parts shall be equal to the same quantity. Aw. 6£. 136. There is a certain number, consisting of two digits. The sum of these digits is 5, and if 9 be added to the number itself the digits will be inverted. What is the... | |
 | Silvestre François Lacroix - Algebra - 1825 - 294 pages
...body weighs as much as his head and tail : what is the whole weight of the fish ? Ans. 72 Ibs. 60. There is a certain number, consisting of two digits, the sum of which digits is 5; and if 9 be added to the number itself the digits will be inverted; what is the... | |
 | Silvestre François Lacroix - Arithmetic - 1825 - 404 pages
...equal parts the continued product of the parts shall be equal to the same quantity. .4ns. 6|. 136. There is a certain number, consisting of two digits. The sum of these digits is 5, and if 9 be added to the number itself the digits will be inverted. What is the... | |
 | James Ryan - Algebra - 1826 - 430 pages
...the shillings in his pocket. Prob. 6. There is a certain number, consisting of two digits. The turn of those digits is 5 ; and if 9 be added to the number...itself, the digits will be inverted. What is the number ? j Here it may be observed, that every number consisting of two digits is equal to 10 times the digit... | |
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The sum of those digits is 5 ; and if 9 be added to the number itself, the digits will be inverted. 
