One hour after yolanda started walking from x to y, a distance of 45 miles, bob started walking along the same road from y to x. if yolanda's walking rate was 3 miles per hour and bob's was 4 miles per hour, how many miles had bob walked when they met?]
Answer:
When bob starts walking The distance between them is 45-3 = 42 miles
If they meet at time t then Yolanda would have walked
X/3 minutes and Bob would have walked (42-X)/4 mins
X/3 = (42-X)/4 so X = 18
Bob would have walked 42-18 = 24 miles.
