InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
The sum of 2 digits number and the number forward by interchange the digits is 132 |
| Answer» Let the two digit no. be 10x + yand the no. when reversed be 10y + xaccording to the question :10x + y + 10y + x = 13211x + 11y = 132taking 11 common11(x + y ) = 132x + y = 12 ----------- 1)lets do the second partNow,10x + y + 12 = 5(x + y)10x + y + 12 = 5x + 5y5x + 12 = 4y4y - 5x = 12 ------ 2)substituting y = 12 - x in equation 2)4( 12 - x ) - 5x = 1248 - 4x - 5x = 1248 - 12 = 9x36 = 9xx = 4x + y = 124 + y = 12y = 8so the no. is 48 | |