Saved Bookmarks
| 1. |
The difference between two positive integers is 13 and their product is 140. Find the two integers |
|
Answer» LET first number be x Second number be y ATQ. X-Y=13 AND X. Y=140 X=13+Y - - - - - - - - 1 By SUBSTITUTING the value of X X. Y=140 (13+Y).Y=140 13Y+Y.Y =140 Y.Y+13Y-140=0 Y.Y+20Y-7Y-140=0 Y(Y+20)-7(Y+20)=0 (y-7)(y+20)=0 By PUTTING them equals to zero, we will get Y=7and Y=-20(N. A) not applicable By putting value of Y=7 in EQUATION 1,we will get X=13+Y X=13+7 X=20 |
|