In a school of 850 boys, 44% of Muslims, 28% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?
Choose the correct answer:  A) 173  B) 163  C) 153  D) 143  E) 133

Rationale: "44 + 28 + 10 = 82 % 100 – 82 = 18 % 850 * 18 / 100 = 153 answer : c"
Answer: C