What is 2a^2 over 4b times b^2 over a^2

Question

or what is 2a squared over 4b, times b squared over a squared ?

Thankyou

Answer 1

2a^2/4b * b^2/a^2 = 2a^2(b^2)/4b(a^2) =
The a^2s cancel each other out, and the b cancels out one of the bs from b^2.

2b/4 = 1/2b or .5b