A worker's daily wage is increased by 50% and the new wage is $30 per day. What was the worker's daily wage before the increase?  Choose the most appropriate option: A) $ 15 B) $ 18 C) $ 20 D) $ 22 E) $ 25

Rationale: let x be the daily wage before the increase . 1.5 x = $ 30 x = $ 20 the answer is c .
Answer: C