A number increased by 20% gives 480. The number is?	Choose the correct choice from the following
A) 200
B) 300
C) 400
D) 500
E) 600

Rationale: formula = total = 100 % , increase = ` ` + ' ' decrease = ` ` - ' ' a number means = 100 % that same number increased by 20 % = 120 % 120 % - - - - - - - > 480 ( 120 × 4 = 480 ) 100 % - - - - - - - > 400 ( 100 × 4 = 400 ) option ' c '
Answer: C