Question

any body can solve this ??

Answer 1

Given that p:q is the sub duplicate ratio of p-x²:q-x²

=> p²/q² = p-x²/q-x²

=> p²(q-x²) = q²(p-x²)

=> p²q-p²x² = pq²-q²x²

=> p²q-pq² = p²x²-q²x²

=> pq(p-q) = x²(p²-q²)

=> pq(p-q)/(p²-q²) = x²

=> pq(p-q)/(p+q)(p-q) = x²

=> pq/p+q = x²

So, (c) option is correct.

Thanks!!!