If 3x – 5y = 5 and x/x+y=5/7, then what is the value of x – y?
Options
A) 9 B) 6 C) 4 D) 3 E) None of these
3x – 5y = 5...(i)   And xx+y=57xx+y=57   ⇒ 7x = 5x+ 5y   ⇒ 2x = 5y... (ii)   From (i) and (ii), x = 5 and y = 2   ∴ x – y = 3   Answer 3
<result>D</result>
If 3x – 5y = 5 and x/x+y=5/7, then what is the value of x – y?