80% of a number is added to 20, the result is the same number. Find the number? Choose the correct choice:
A) 300
B) 288
C) 270
D) 100
E) 281

Rationale: ( 80 / 100 ) * x + 20 = x 4 x + 100 = 5 x x = 100 answer : : d
Answer: D