Question
PSLE
Sean and Brandon ran in a race around a 900 m track. Sean ran at a speed of 210 m/min and Brandon at a speed that was 30 m/min slower than Sean throughout the race. How many complete rounds would Sean have finished when he ran a distance of 600 m more than Brandon?
3 m

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PSLE
Sean and Brandon ran in a race around a 900 m track. Sean ran at a speed of 210 m/min and Brandon at a speed that was 30 m/min slower than Sean throughout the race. How many complete rounds would Sean have finished when he ran a distance of 600 m more than Brandon?