In Chittagong stock exchange, the price of Bata share rose 30% yesterday and fell 20% today. What is the total rise or fall in percentage?
A 4% rise
B 8% rise
C 6% rise
D 10% rise
Solution
Correct Answer: Option A
Total rise or fall in percentage = ± a ± b ± (ab/100)
= 30 - 20 - {(30 x 20)/100}
= 10 - 6
= 4%