2 runners(Alice, Bob) are running on the oval track at a constant speed. The tracklength is 200 meters.
First Alice ran with such low speed that Bob passed him every 2 minutes. To run faster than Bob, Alice sped up 2 times and now she is passing him every 6 minutes. What speed did Bob ran at in km/h?
How much was Bob faster than Alice at first speed?
1/30h is 2 minutes x km/h * 1/30h = 0.2km x = 6km/h
How much was Alice faster than Bob at second speed?
1/10h is 6 minutes 2x km/h * 1/10h = 0.2km x = 1km/h
Don't know how to create equation out of this.