The cost of an article is decreased by 50%. If the original cost is $200, find the decrease cost. Choose the correct choice from the following
A) 330
B) 200
C) 150
D) 100
E) 91

Rationale: original cost = $ 200 decrease in it = 50 % of $ 200 = 50 / 100 ã — 200 = 10000 / 100 = $ 100 therefore , decrease cost = $ 200 - $ 100 = $ 100 answer : d
Answer: D