Level 50: Three students ride bicycles from school to the District Gymnasium to learn to swim. Your first friend’s speed is 3 km/h less than your second’s speed. The time it takes for the first, second, and third friends to get from school to the District Gymnasium is 30 minutes, ({2 over 5}) hours and ({4 over 9}) hours, respectively. How many kilometers is the distance to the District Gymnasium?

Level 50: Three students ride bicycles from school to the District Gymnasium to learn to swim. Your first friend’s speed is 3 km/h less than your second’s speed. The time it takes for the first, second, and third friends to get from school to the District Gymnasium is 30 minutes, ({2 over 5}) hours and …

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