I had 30 donuts when I left home this morning but only 9 when I came back home. What percentage of the donuts are missing?	Choices: A) 70 B) 65 C) 55 D) 75 E) 60

Rationale: 30 - 9 = 21 21 / 30 or 7 / 10 7 / 10 = 70 / 100 = 70 % answer is a
Answer: A