In the Science City, Kolkata the rate of the ticket is increased by 50% to increased the revenue but simultaneously 20% of the visitor decreased. What is percentage change in the revenue. if it is known that the Science city collects one revenue only from the visitors and it has no other financial supports:

A. +20%

B. -25%

C. +30%

D. -30%

E. Cannot determined

Answer: Option A

Solution(By Examveda Team)

Let the initial revenue be 100
100 === 50% ↑ (Ticket up) ===> 150 === 20% ↓ (Visitors down) ===> 120
There is 20% increase in the revenue