Question

A wheel takes m rotations to travel a certain distance while another wheel whose diameter is four times bigger than it takes n rotations to travel the same distance. The relation between

• A. m $=$ 4n
• B. m $=$ 2n
• C. 2m $=$ n
• D. 4m $=$ n

Answer 1

The correct option is A m $=$ 4n

$\frac{d}{m}=\pi Dand\frac{d}{n}=\pi .4D\therefore \frac{n}{m}=\frac{1}{4}or4n=m$'