A number increased by 40% gives 1680. The number is? Choices.
A) 1680 B) 1600 C) 1200 D) 1500 E) 600

Rationale: "formula = total = 100 % , increase = ` ` + ' ' decrease = ` ` - ' ' a number means = 100 % that same number increased by 40 % = 140 % 140 % - - - - - - - > 1680 ( 140 ã — 12 = 1680 ) 100 % - - - - - - - > 1200 ( 100 ã — 12 = 1200 ) option ' c '"
Answer: C