If 50 % of P = 25% of Q, then P = y% of Q. Find y.

Given that , 50 % of P = 25% of Q

P ×	50	= Q ×	25	́
	100		100

⇒ P × 50 = Q × 25

⇒ P =	Q × 25	⇒ P =	Q	́
	50		2

P = Q y %

∴ Q ×	y	=	Q	́
	100		2

⇒ y =	100	= 50
	2