Question
PSLE
Liam and Perry ran in a race around a 400 m track. Liam ran at a speed of 223 m/min and Perry at a speed that was 30 m/min slower than Liam throughout the race. How many complete rounds would Liam have finished when he ran a distance of 900 m more than Perry?
3 m

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PSLE
Liam and Perry ran in a race around a 400 m track. Liam ran at a speed of 223 m/min and Perry at a speed that was 30 m/min slower than Liam throughout the race. How many complete rounds would Liam have finished when he ran a distance of 900 m more than Perry?