A box has 100 blue balls, 50 red balls, 50 black balls. 25% of blue balls and 50% of red balls are taken away. % of black balls at present is

A box has 100 blue balls, 50 red balls, 50 black balls. 25% of blue ba

1.	A box has 100 blue balls, 50 red balls, 50 black balls. 25% of blue balls and 50% of red balls are taken away. % of black balls at present is
A.	(100/3)%
B.	40%
C.	50%
D.	25%
Answer» B. 40%