This is a question from the GRE Exam Question What is a divi

This is a question from the G.R.E. Exam.

Question: What is a divided by a% of a?

a: a/100

b: 100/a

c: a²/100

d: 100/a²

e: 100a

The answer is b: 100/a

but I don\'t understand how they got b? Please show your work. Thank you!

Solution

a / (a% of a) = a / (a% * a)

= a / (a/100 * a)

= a / (a^2/100)

= a * (100/a^2)

= 100 / a

answer is B