Converting MPH to Light years/century

[rkennedy9064]

Homework Statement

A certain spaceship has a speed of 12400 mi/hr. What is its speed in light-years/century? A light-year is the distance that light travels in one year with a speed of 186,000 mi/s.

Homework Equations

A light-year is the distance that light travels in one year with a speed of 186,000 mi/s.

The Attempt at a Solution

I'm having some trouble figuring out how to do this problem. The homework is submitted online so I can't tell if I'm doing the problem completley wrong or if my answer is off by a little bit. Can anyone help me figure this out? Don't you just have to convert mph to light years and then multiply that by how much time is in a century?

 

[supratim1]

no attempt, no help!

 

[supratim1]

by the way its nothing different than converting the given speed to centimeter/nanosecond. simple conversion.