Question
PSLE
Warren and Jack ran in a race around a 600 m track. Warren ran at a speed of 143 m/min and Jack at a speed that was 20 m/min slower than Warren throughout the race. How many complete rounds would Warren have finished when he ran a distance of 400 m more than Jack?
3 m

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PSLE
Warren and Jack ran in a race around a 600 m track. Warren ran at a speed of 143 m/min and Jack at a speed that was 20 m/min slower than Warren throughout the race. How many complete rounds would Warren have finished when he ran a distance of 400 m more than Jack?