Dear Tutors, Please Help me...
Gerald and Bryan ran round a 800m circular track. Gerald ran at a speed of 215m/min and Bryan at a speed that was 50m/min slower than Gerald throughout the race. How many complete rounds would gerald have finished when he had run a distance of 600m more than Bryan?
their speed difference is 50m/min, so it will take Gerald 600/50 = 12 minutes to run the extra distance.
So, how many laps does Gerald run in 12 minutes?