40 is what percent of 160? show your work

A 4%
B 20%
C 25%
D 64%

To find the percent, we can set up a proportion:

40/160 = x/100

Cross multiplying, we get:

160 * x = 40 * 100

Dividing both sides of the equation by 160, we get:

x = (40 * 100) / 160

Simplifying, we get:

x = 4000 / 160

x = 25

So, 40 is 25% of 160.

The correct answer is C) 25%.