0 votes 0 votes The number of solutions of the equation $2x+y=40$ where both $x$ and $y$ are positive integers and $x \leq y$ is: $7$ $13$ $14$ $18$ $20$ Quantitative Aptitude cat2006 quantitative-aptitude algebra + – go_editor asked Dec 28, 2015 • edited Mar 29, 2022 by Lakshman Bhaiya go_editor 13.9k points 801 views answer comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes 13 solutions. For x = y, there are no integer solutions as there is no positive integer x for which 3x = 40. For x < y, we have 13 integer solutions for each x from 1 to 13 as (x, y) = (1,38), (2,36), (3,34)...... (13,14) just_bhavana answered Oct 2, 2017 just_bhavana 1.5k points comment Share See all 0 reply Please log in or register to add a comment.