You can visualize the process if you think about a trip in your car. if you tell a friend that you are 140 miles away from your starting point and traveled at 70 miles per hour, your friend would know you had been traveling 2 hours. you know this from the relationship: distance (d) - velocity (v) * time (t) d=v. t or t=d/ (eq. 3) question 12. we can now determine when the universe "started its trip." use the distance and velocity of one of the galaxies and eq 3. finally, convert your answer to billions of years (show your work and conversion, with units). confirm that this answer is roughly in range of your answer to question 5.18 pts age (seconds) = age (years) = billion yrs