At a clearance sale, Lan bought a $10 hat at a 10% discount, a $20 shirt at a 20% discount, and a $40 pair of pants at a 40% discount. If Pauline bought the same hat, shirt and pants all at a uniform discount, and ended up paying the same amount of money as Lan, what percent discount did Pauline receive?
(A) 10 %
(B) 20 %
(C) 30 %
(D) 40 %
(E) 50 %![]()
(A) 10 %
(B) 20 %
(C) 30 %
(D) 40 %
(E) 50 %