add 10% of 30 and 15% of 50.
Choose the correct choice from the following choices
A) 9.5 B) 10.5 C) 11.5 D) 12 E) 15

Rationale: "10 % of 30 + 15 % of 50 30 * 10 / 100 + 50 * 15 / 100 3 + 7.5 = 10.5 answer b"
Answer: B