Question
PSLE
Lee and Vaidev ran in a race around a 1000 m track. Lee ran at a speed of 169 m/min and Vaidev at a speed that was 20 m/min slower than Lee throughout the race. How many complete rounds would Lee have finished when he ran a distance of 400 m more than Vaidev?
3 m

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PSLE
Lee and Vaidev ran in a race around a 1000 m track. Lee ran at a speed of 169 m/min and Vaidev at a speed that was 20 m/min slower than Lee throughout the race. How many complete rounds would Lee have finished when he ran a distance of 400 m more than Vaidev?