It is the New Year and Mandy has made a resolution to lose weight this year. She plans to exercise and do yoga. For exercise she plans to workout at the gym and ride her bicycle in the ratio of 2:3 everyday. She will also do yoga in the ratio, yoga:exercise = 2:3. If she rides her bike for 20 minutes, how much time will she spend doing yoga? (rounded to minutes)	Choose the correct answer:
A) 10 min .
B) 33 min .
C) 17 min .
D) 23 min .
E) 25 min .

Rationale: "the ratio is 2 : 3 = gym : ride , so ( 20 ) ( 3 / 2 ) = 30 minutes at the gym , and 30 + 20 = 50 minutes exercise , so ( 2 / 3 ) ( 50 ) = 33 minutes yoga . answer : b"
Answer: B