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" The sum of two digits of a number is 9, and if 27 is subtracted from the number, the digits will be reversed. Find the number. Let x = the tens' digit, and y = the units "
A School Algebra - Page 239
by George Albert Wentworth - 1894 - 362 pages
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The First Steps in Algebra: By G. A. Wentworth ...

George Albert Wentworth - Algebra - 1894 - 238 pages
...number is 45. 2. A certain number of two digits is equal to eight times the sum of its digits, and if 45 is subtracted from the number, the digits will be...reversed. Find the number. Let x = the tens' digit, and у = the units' digit. Then Wx + y — the number. Hence Wx + y = 8(x + y) (1) and 10x + ?/-45= Wy...
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The First Steps in Algebra

George Albert Wentworth - Algebra - 1894 - 206 pages
...number. 2. A certain number of two digits is equal to eight times the sum of its digits, and if 45 is subtracted from the number, the digits will be reversed. Find the number. 3. The sum of a certain number of two digits and of the number formed by reversing the digits is 132,...
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New School Algebra

George Albert Wentworth - Algebra - 1898 - 434 pages
...(3) Solving these equations, z = 8, у = 7, z = 6. Therefore, the number is 876. 15. The sum of the two digits of a number is 9, and if 27 is subtracted...number, the digits will be reversed. Find the number. 16. The sum of the two digits of a number is 9, and if the number is divided by the sum of the digits,...
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Advanced Course in Algebra

Webster Wells - Algebra - 1904 - 642 pages
...The digits of a number of three figures are in geometric progression, and their sum is 14. If 61)4 be subtracted from the number, the digits will be reversed. Find the number. 14. The with term of a geometric progression is p, and the nth term is q ; prove that the first term...
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Elementary Algebra

Walter Randall Marsh - Algebra - 1905 - 446 pages
...exactly 5 minutes ahead of the hour hand ? 55. The sum of the two digits of a number is 9, and if 9 be subtracted from the number the digits will be reversed. Find the number. 56. The tens' digit exceeds the units' digit of a number of two digits by 1, and if 9 be subtracted...
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Algebra for Secondary Schools

Webster Wells - Algebra - 1906 - 484 pages
...and third by 3. The sum of the first and second digits exceeds 4 times the third by 1 ; and if 495 be subtracted from the number, the digits will be reversed. Find the number. 17. A ship has provisions for 36 days. If the crew were 16 greater, and the daily ration one-half pound...
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School Algebra

James William Nicholson - Algebra - 1909 - 332 pages
...digit, the number is 10 x + y. 11. The sum of the two digits of a number is 11, and if 63 is added to the number, the digits will be reversed. Find the number. Let x — the tens' digit, and >/ = the units' digit. Then 10x + y = the number. Hence, £ + .'/= И, (1) and 10x + y + 63= 10// +...
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First Year Algebra

Webster Wells, Walter Wilson Hart - Algebra - 1912 - 344 pages
...a number is 23 ; and the digit in the tens' place exceeds that in the units' place by 3. If 198 be subtracted from the number, the digits will be reversed. Find the number. XIV. SQUARE ROOT AND QUADRATIC SURDS 175. Square Root by Inspection. The square root of a perfect square...
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New High School Algebra

Webster Wells, Walter Wilson Hart - Algebra - 1912 - 504 pages
...a number is 23 ; and the digit in the tens' place exceeds that in the units' place by 3. If 198 be subtracted from the number, the digits will be reversed. Find the number. 18. A and В can do a piece of work in 10 days, A and С in 12 days, and В and С in 20 days. In how...
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Academic Algebra

George Wentworth, David Eugene Smith - Algebra - 1913 - 478 pages
...of tens is increased by 4, and the number of units decreased by 4, the digite will be interchanged. Find the number. Let x = the tens' digit, and y = the units' digit. Then the number is 10 x + y, just as 85 means 3 tens + 5, or 10 x 3 + 6. Likewise, the number with the digits...
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