In a school of 450 boys, 44% of Muslims, 28% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?  Choose the correct choice from the following choices.
A) 72
B) 75
C) 80
D) 81
E) 90

Rationale: "44 + 28 + 10 = 82 % 100 – 82 = 18 % 450 * 18 / 100 = 81 answer : d"
Answer: D