100 Points!
Two cars are traveling down the highway at the same speed. If the first car increases its speed by 10 kilometers per hour, and the second car decreases its speed by 10 kilometers per hour, then the first car will travel the same distance in two hours that the second car travels in three hours. What is the original speed of the cars?
Question
No clue if this is correct but this is what i found online
let s = the original speed
Write a distance equation; dist = time * speed
3(s-10) = 2(s+10)
3s – 30 = 2s + 20
3s – 2s = 20 + 30
s = 50 km/hr is the original speed
:
:
confirm this, find the distances
3(50-10) = 120 km
2(50+10) = 120 km