The length of a rectangle is increased by 15% and its breadth is decreased by 20%. What is the effect on its area? Choose the correct choice from the following answers.
A) 1288  B) 1299  C) 1000  D) 10000  E) 9200

Rationale: "100 * 100 = 10000 115 * 80 = 9200 answer : e"
Answer: E