 | 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... | |
 | Bewick Bridge - Algebra - 1821 - 284 pages
...x3' °Г Т = 27'. Divide by x*, then 27 =4 x, 27 and ж=— =6j, the number required. QUESTION 16. There is a certain number, consisting of two digits. The sum of those digits is 5 ; and if 9 be added to the number itself, the digits will be inverted. What is 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. The sum of those digits is 5; and if 9 be added to the number itself, the digits will be inverted. What is the... | |
 | 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 - 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....these digits is 5, and if 9 be added to the number itself the digits will be inverted. What is the number ? Ans. 23. 137. What number is that, to which... | |
 | 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....these digits is 5, and if 9 be added to the number itself the digits will be inverted. What is the number ? An'. 23. 137. What number is that, to which... | |
 | 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... | |
 | Richard W. Green - Algebra - 1839 - 156 pages
...first. What is the value of the second horse, and of the chaise? Ans. Horse $210 ; Chaise $240. 8. There is a certain number consisting of two digits....these digits is 5 ; and if 9 be added to the number itself, the digits will be inverted. What is the number? Ans. 23. 9. There are two numbers such that... | |
 | Bewick Bridge - Algebra - 1839 - 280 pages
...4~=27' .-. 27^=4ar'. Divide by a^, then 27=4x, 27 and x=— =6J, the number required. QUESTION 16. There is a certain number, consisting of two digits. The sum of those digits is 5 ; and if 9 be added to the number itself, the digits will be inverted. What is the... | |
 | James Hamblin Smith - Algebra - 1870 - 478 pages
...may be represented algebraically by l00x+l0y+z. Ex. The sum of the digits composing a certain number is 5, and if 9 be added to the number the digits will be inverted. Find the number. Let l0x+y represent the number. Then x+y will represent the number... | |
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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 ? Ans. 