A person bought 135 glass bowls at a rate of Rs. 15 per bowl. He sold 115 of them at Rs. 18 and the remaining broke. What is the percentage gain for A?	Choose the most appropriate option
A) 40
B) 30 / 11
C) 20 / 9
D) 27 / 11
E) 29 / 8

Rationale: "cp = 135 * 15 = 2025 and sp = 115 * 18 = 2070 gain % = 100 * ( 2070 - 2025 ) / 2025 = 20 / 9 answer : c"
Answer: C