Question
PSLE
Seth and Dylan ran in a race around a 400 m track. Seth ran at a speed of 219 m/min and Dylan at a speed that was 18 m/min slower than Seth throughout the race. How many complete rounds would Seth have finished when he ran a distance of 900 m more than Dylan?
3 m

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PSLE
Seth and Dylan ran in a race around a 400 m track. Seth ran at a speed of 219 m/min and Dylan at a speed that was 18 m/min slower than Seth throughout the race. How many complete rounds would Seth have finished when he ran a distance of 900 m more than Dylan?