The salary of a worker is first increased by 30% and afterwards reduced by 30%. What is net change in his salary?
Options:
(A) 910% increase
(B) 10% increase
(C) 9% decrease
(D) 12% decrease
(E) 15% increase Hmmm, my stream of consciousness:
(30 * 30)/100 = 9% decrease So, the answer is (C).