WBJEE 2019 Math Solved Paper

Question : 45 of 75

Marks: +1, -0

if the point of intersection of the lines 2ax + 4ay + c = 0 and 7bx + 3by – d = 0 lies in the 4th quadrant and is equidistant from the two axes, where a, b, c and d are non-zero numbers, then ad : bc equals to