Question

If your speed is 1/20 the speed of light, how long will it take you to reach this nearest star? (nearest star is 4 LY away)

Answer 1

We know, speed = Distance / time
Here, speed = 1/20 Ly
Distance = 4 Ly

Substitute their values into the expression:
1/20 = 4 / t
t = 4 * 20
t = 80 Years

In short, Your Answer would be 80 Years

Hope this helps!